Updated 19 September 2026
At a glance
- Post-exertional fatigue is not ordinary tiredness after chores. Date the triggering activity, delay before the crash, severity, and what the next day limited.
- CDC describes post-exertional malaise in ME/CFS as symptom worsening after activity that would not have caused problems before.
- NHS notes activity-related worsening in ME/CFS and advises pacing with clinical guidance.
- Mayo Clinic lists post-exertional malaise among ME/CFS features.
- Quieter days still belong in the log so louder post-exertional fatigue days days stay readable.
- Chronic Illness Journey keeps Daily check-in marks on one history with flares and journal context.
A normal errand leads to a wiped next day that is worse than the effort deserved. Post-exertional fatigue days are dated activity-and-crash windows — not a push-through protocol.
This guide is tracking for post-exertional fatigue days — timing, severity, function, and stacks worth dating so visit notes stay comparable.
What chronic-illness post-exertional fatigue days look like to capture
Post-exertional malaise (PEM) in ME/CFS and PEM-like patterns in other chronic illnesses feature delayed crashes after physical, cognitive, or emotional load. Dating the trigger, delay hours, and next-day function helps pacing talks and clinical visits.
CDC describes post-exertional malaise in ME/CFS as symptom worsening after activity that would not have caused problems before.
NHS notes activity-related worsening in ME/CFS and advises pacing with clinical guidance.
Signs the day is post-exertional fatigue days-shaped
- Crash hours to a day after activity
- Severity out of proportion to the task
- Cognitive fog with the crash
- Needing extended rest afterward
Same-day marks beat a weekly essay written the night before a visit. Even three or four clear louder days plus quieter contrast days can teach more than a long undated story. Keep fields short enough that you will actually open them on hard days.
For chronic illness, treat what chronic-illness post-exertional fatigue days look like to capture as a dated clinical note, not a vibe. Write clock time or part of day, what changed in the body, and one ordinary task that got harder or easier. That trio turns “chronic illness post-exertional fatigue days: what to capture” into something a clinician can compare across weeks.
Keep the same short fields on quieter days as on loud ones. Contrast is what makes a spike readable. If you only write on the worst chronic illness days, every visit story sounds the same and pacing choices stay guesswork.
- Onset or start window (clock time, after meal, after exertion, after sleep)
- Severity in your usual 0–10 or mild/moderate/severe words — stay consistent week to week
- One function limit (work block, care task, walking, eating, intimacy, concentration)
- Optional stack word already in your care picture (sleep, meds timing as prescribed, cycle day, stress load)
In Chronic Illness Journey, mark trigger activity, delay, and crash severity in Daily check-in. Use Flare Tracker when the day is clearly worse than your usual hard chronic illness baseline. Insights can show whether louder post-exertional fatigue days clustered with days after cognitive or physical load.
Exertion load, crash delay, and next-day function to date
A single vague “post-exertional fatigue days is bad” label hides the week. Short fields for timing, severity, and one function limit keep two different hard days from looking identical.
Log when you are safe enough to type or speak a short line. One to two minutes of same-day marks beats a blank week of adjectives.
| What to date | Why it matters | Optional plain example |
|---|---|---|
| Timing / onset | Shows window | After long meeting |
| Severity | Shows intensity | Crash +18h |
| Function limit | Shows cost | Bed most of day |
| Sleep quality | Shows stack | Unrefreshing |
| Meds as prescribed | Shows plan | Taken as prescribed |
| Context word | Shows stack | Fog high |
A floor that still teaches
- Timing word
- Severity word
- One function limit
- One sleep or context word
Keep the same short fields on quieter days as on loud ones. Contrast is what makes a spike readable. If you only write on the worst chronic illness days, every visit story sounds the same and pacing choices stay guesswork.
- Onset or start window (clock time, after meal, after exertion, after sleep)
- Severity in your usual 0–10 or mild/moderate/severe words — stay consistent week to week
- One function limit (work block, care task, walking, eating, intimacy, concentration)
- Optional stack word already in your care picture (sleep, meds timing as prescribed, cycle day, stress load)
Skip inventing a single villain from one Tuesday. A dated stack (sleep + load + symptom) is enough for Chronic Illness Journey Insights to show whether louder chronic illness post-exertional fatigue days: what to capture clustered with the same pattern — a pacing clue you can use with your care team.
With Chronic Illness Journey, keep that short floor in Daily check-in. Add one free line in Daily Journal when partner talks, visit debriefs, or context scores cannot carry needs a word scores cannot carry. Insights can separate a one-off spike from a repeating post-exertional fatigue days pattern across the weeks you logged.
Sleep and multi-condition stacks in the same window
Name the trigger simply: walk, shower, meeting, screen work. Note approximate delay before the crash.
Pacing and rest guidance belong with clinicians familiar with PEM. This log supports that care — it does not endorse graded push protocols from blogs.
Quieter non-crash days still belong so crash days have contrast.
Date changes that clearly helped or hurt function — without turning helpers into a rigid protocol without your clinician.
Keep the same short fields on quieter days when you are tracking this angle for a visit. Contrast is what makes a loud day readable across the week. If a field does not apply, leave it blank rather than inventing detail.
- Onset or start window (clock time, after meal, after exertion, after sleep)
- Severity in your usual 0–10 or mild/moderate/severe words — stay consistent week to week
- One function limit (work block, care task, walking, eating, intimacy, concentration)
- Optional stack word already in your care picture (sleep, meds timing as prescribed, cycle day, stress load)
Skip inventing a single villain from one Tuesday. A dated stack (sleep + load + symptom) is enough for Chronic Illness Journey Insights to show whether louder chronic illness post-exertional fatigue days: what to capture clustered with the same pattern — a pacing clue you can use with your care team.
When this section is about visits, bring two protected questions plus the dated window — not a full diary dump. A one-pager or short list of louder days with function marks usually fits a short specialty slot better than a long narrative.
Inside Chronic Illness Journey, keep trigger activity, delay, and crash severity in Daily check-in or Daily Journal. Hold medicine timing as prescribed in My Meds. Insights can show whether louder post-exertional fatigue days rose with unrefreshing nights or missed med timing across the weeks you logged.
What paced days add for contrast
A loud post-exertional fatigue days day can shrink work, care tasks, and evening plans. Dating what you postponed shows life cost that a severity number alone hides.
| Day shape | What often follows | What to date |
|---|---|---|
| Mild day | Mostly functional | Severity + mild |
| Loud day | Cancelled plans | Severity + limit |
| Loud + poor sleep | Earlier crash | Severity + sleep |
| Quieter day | Useful contrast | Thin “easier” mark |
Quieter days still belong in the log. Without contrast, every hard post-exertional fatigue days day looks inevitable.
Work and caregiving collide hard with loud days. One work or care word is enough when the link is obvious.
Skip inventing a single villain from one Tuesday. A dated stack (sleep + load + symptom) is enough for Chronic Illness Journey Insights to show whether louder chronic illness post-exertional fatigue days: what to capture clustered with the same pattern — a pacing clue you can use with your care team.
When this section is about visits, bring two protected questions plus the dated window — not a full diary dump. A one-pager or short list of louder days with function marks usually fits a short specialty slot better than a long narrative.
Red-flag change that is new for you (sudden severe pain, chest pain, fainting, one-sided weakness, vision loss, breathing trouble, suicidal thoughts) belongs on urgent pathways first. Resume thin same-day marks in Chronic Illness Journey when you are stable so follow-up has context.
In Chronic Illness Journey, date function limits and cancelled plans beside post-exertional fatigue days marks in Daily check-in or Daily Journal. Insights can show which weeks limited function most after louder post-exertional fatigue days days.
Questions for the next primary-care visit about post-exertional days
Broken sleep, missed meds as prescribed, illness recovery, stress load, and other obvious context can stack with louder post-exertional fatigue days. Date a type word only when the link is clear.
Stacks that often often appear with louder post-exertional fatigue days
- Cognitive load day
- Physical chore day
- Poor prior sleep
- Infection recovery
- Emotional stress day
- Menstrual week when that is true for you
Add a stack word only when obvious. Skip inventing a single villain from one Tuesday.
Skip inventing a single villain from one hard day. Onset and severity without a cause still teach.
When a stack is unclear, keep timing and severity anyway. A week of dated post-exertional fatigue days without a perfect cause still helps pacing and visits more than a blank calendar. Add the stack word later if the link becomes obvious across more than one week.
When this section is about visits, bring two protected questions plus the dated window — not a full diary dump. A one-pager or short list of louder days with function marks usually fits a short specialty slot better than a long narrative.
- Onset or start window (clock time, after meal, after exertion, after sleep)
- Severity in your usual 0–10 or mild/moderate/severe words — stay consistent week to week
- One function limit (work block, care task, walking, eating, intimacy, concentration)
- Optional stack word already in your care picture (sleep, meds timing as prescribed, cycle day, stress load)
Red-flag change that is new for you (sudden severe pain, chest pain, fainting, one-sided weakness, vision loss, breathing trouble, suicidal thoughts) belongs on urgent pathways first. Resume thin same-day marks in Chronic Illness Journey when you are stable so follow-up has context.
Name the body site when it matters for chronic illness: which joint, which gut window, which side, which part of the cycle. Vague whole-body labels hide whether the same place keeps repeating beside the same stack.
With Chronic Illness Journey, keep obvious stack words in Daily check-in or Daily Journal. Use Flare Tracker when the whole day is clearly above your usual hard baseline. Use Period Tracker when cycle timing sits next to louder post-exertional fatigue days. Insights can show whether louder post-exertional fatigue days clustered with the same stack across more than one week.
How to summarize crashes without a graded-exercise plan at home
Bring dated post-exertional fatigue days, severity, function limits, sleep, meds as prescribed, and two asks. Soft phrasing helps: lead with dates and function, then adjectives.
| Bring | Why |
|---|---|
| Dated pattern | Shows course |
| Severity + limits | Shows function |
| Sleep notes | Shows stack |
| Meds as prescribed | Shows plan |
| Two asks | Protects slot |
Write visit questions such as: whether post-exertional fatigue days fits your condition picture; whether the care plan needs review; whether pacing or testing belongs next. Lead with dated windows and function, then adjectives.
If the slot is only 10–15 minutes, protect the two asks first. Offer the dated timeline as a one-pager or short bullet list rather than reading every journal line aloud.
Red-flag change that is new for you (sudden severe pain, chest pain, fainting, one-sided weakness, vision loss, breathing trouble, suicidal thoughts) belongs on urgent pathways first. Resume thin same-day marks in Chronic Illness Journey when you are stable so follow-up has context.
Name the body site when it matters for chronic illness: which joint, which gut window, which side, which part of the cycle. Vague whole-body labels hide whether the same place keeps repeating beside the same stack.
If medication timing is already part of your plan, date the dose as prescribed next to the symptom window — do not change medicines from an article. The value is seeing whether louder days lined up with missed timing, sleep loss, or a different load.
For planned visits, skim Daily check-in and My Meds in Chronic Illness Journey. List questions in My Care Team. Use a Doctor Report if a one-pager helps open the slot from dated weeks. Insights can show which post-exertional fatigue days stacks repeated before you speak.
Warning signs that need urgent care
Chest pain emergencies, fainting with injury, or inability to drink/eat for prolonged periods need urgent care — not another pacing essay.
For ordinary hard weeks, keep logging thin and same-day. Escalate when symptoms suddenly differ from your known pattern with systemic red flags.
Bring the dated change when you call — when post-exertional fatigue days intensified, what function failed, and whether meds stayed as prescribed.
Ordinary hard post-exertional fatigue days weeks still deserve thin same-day marks after you are safe. The log supports later review; it does not decide whether today is an emergency. When you are unsure, prefer a clinician call over waiting for a perfect symptom essay.
Name the body site when it matters for chronic illness: which joint, which gut window, which side, which part of the cycle. Vague whole-body labels hide whether the same place keeps repeating beside the same stack.
- Onset or start window (clock time, after meal, after exertion, after sleep)
- Severity in your usual 0–10 or mild/moderate/severe words — stay consistent week to week
- One function limit (work block, care task, walking, eating, intimacy, concentration)
- Optional stack word already in your care picture (sleep, meds timing as prescribed, cycle day, stress load)
If medication timing is already part of your plan, date the dose as prescribed next to the symptom window — do not change medicines from an article. The value is seeing whether louder days lined up with missed timing, sleep loss, or a different load.
For chronic illness, treat warning signs that need urgent care as a dated clinical note, not a vibe. Write clock time or part of day, what changed in the body, and one ordinary task that got harder or easier. That trio turns “chronic illness post-exertional fatigue days: what to capture” into something a clinician can compare across weeks.
With Chronic Illness Journey, keep red-flag context in Daily Journal if you later need a dated trail of what changed. Companions can help you draft a calm call script while care decisions stay with clinicians. Insights still rest on the weeks you logged — they do not replace urgent care.
How Chronic Illness Journey can help
Your Journey can hold a short dated note. If you want help dating post-exertional fatigue days next to post-exertional fatigue days, sleep, and function limits — so vague hard weeks become clear windows — a condition-shaped log can help.
Chronic Illness Journey is a personal chronic illness tracker from Health Journey Labs on the App Store and Google Play. On post-exertional fatigue days days it keeps Daily check-in marks next to related notes so insights can show whether louder days rose with cancelled plans or unrefreshing nights. Below is what you can use and how each part helps:
- Daily check-in — A short guided pass across physical symptoms, emotional state, nutrition, sleep, exercise, meds, and external factors — including energy, pain, fog, and how the day went. You do not need every field every day; what you keep joins the same history so insights can show links — for example afternoon crashes after short nights — that memory alone often misses.
- Daily Journal — Freer notes, including voice when typing is too much: what you cancelled, partner talks, visit debriefs, leftover guilt, or a work hour you could not finish. Those lines give insights and your later review the context scores alone cannot carry.
- Flare Tracker — Mark a day that is clearly worse than your usual chronic-illness week — onset, main symptoms, intensity, and a short note. Flare marks help insights separate a one-off spike from a repeating hard week across your history.
- My Meds — Medicine names and timing (including as-needed doses you actually use). When you log a med or dose, insights can relate that timing to energy, sleep, pain, and the rest of what you tracked — so you can see how treatment sits with what else is happening, not only keep a list.
- My Labs — Result dates when labs or other workups are ordered. Labs join the same history as the weeks you lived, so insights and follow-up can weigh numbers next to function and symptoms.
- Weekly Goals — Set one small aim — open a check-in four evenings, mark every crash day for two weeks, finish a one-pager the night before clinic — and see whether it held. Progress against your real check-ins shows whether a habit change helped, without blaming every rough day on that experiment.
- Learn — Short education topics and prompts on chronic-illness themes (energy, pacing, flares, visit prep, sleep). Use them when you want calm context beside your own logged weeks — and when a companion already has those weeks in view.
- AI companions — Clara is the general chat; specialist companions cover major topics (knowledge, fitness, nutrition, relationships, and related). They already see your logged history — useful for visit wording, a calm partner script, a soft work line, or a listening ear after a hard day, while insights still rest on what you logged.
- My Care Team — Add clinicians and short visit notes (for example tends to ask only about one diagnosis, not energy). Use it to prep what to ask and what to bring, jot notes during the visit, and review afterward — so the next steps grow from your logged history and the patterns insights already see.
- Doctor Report — Export a one-page summary drawn from the history you already logged — dates, energy and pain, sleep, meds, and how you functioned — so a short visit can open from the patterns and weeks you lived, not from rebuilding the story on the spot.
- My Assessments — Structured check-ins that deepen the picture beyond daily scores (including onboarding life and social context). Together with your ongoing history they give insights more context about you, not only isolated days.
- Food Tracker — Meal or drink lines when food clearly sits next to louder energy, pain, or GI days. Logging food is so insights can relate meals to symptoms and sleep — not so you remember a menu.
- Period Tracker — Log start and stop dates, flow, and how heavy or light bleeding felt when cycle timing sits next to pain or energy. Insights can relate those weeks to what else you logged — so you see how cycle stretches fit your full picture when that matters.
- Weight Tracker — Scale or body notes when weight is part of what you and your clinician are watching. Those entries join the same history as energy, sleep, and symptom weeks so insights can show how weight shifts sit with the rest of your picture.
Everything you log builds one history. Insights and correlations get stronger as that history grows — including the onboarding picture of your life context — so you can work out patterns with dated evidence instead of foggy recall. Guided forms include the key questions, and you can add custom symptoms when you need your own labels.
We make Chronic Illness Journey at Health Journey Labs. This guide is educational; your Journey can hold dated notes. We mention our app where a condition-shaped tracker helps with this logging angle, with that conflict stated here. The app does not diagnose or treat chronic illness, change medication plans, or replace urgent care.
Sources
FAQ
What if tracking post-exertional fatigue days raises anxiety?
Keep fields very short. A two-word mark is enough on hard days. Pause if logging worsens panic and use your clinician’s plan. Keep the answer practical: what to date, what to bring to the visit, and what to leave for urgent care. Thin same-day marks beat a long catch-up written the night before.
In Chronic Illness Journey, you do not need every Daily check-in field every day. Insights can still use thin marks once several land. Dated fields in Chronic Illness Journey keep the week comparable so Insights can show whether louder stretches of chronic illness post-exertional fatigue days: what to capture repeated with the same sleep or load pattern.
Should quieter post-exertional fatigue days days still be logged?
Yes. Without contrast, every hard day looks inevitable. Thin easier marks teach as much as loud days. Keep the answer practical: what to date, what to bring to the visit, and what to leave for urgent care. Thin same-day marks beat a long catch-up written the night before.
Still complete Daily check-in on calmer days in Chronic Illness Journey. Insights need contrast to separate pattern from noise. Dated fields in Chronic Illness Journey keep the week comparable so Insights can show whether louder stretches of chronic illness post-exertional fatigue days: what to capture repeated with the same sleep or load pattern.
Why log detail instead of only writing “post-exertional fatigue days is bad”?
Timing, severity, and one function limit turn a vague day into a comparable window. Quieter days give contrast so loud days stay readable. Keep the answer practical: what to date, what to bring to the visit, and what to leave for urgent care. Thin same-day marks beat a long catch-up written the night before.
In Chronic Illness Journey, keep marks in Daily check-in. Insights can show whether louder days clustered with the same sleep or load pattern across the weeks you logged so pacing decisions rest on dated weeks, not a single loud day.
How long should I track post-exertional fatigue days before a visit?
Often one to two weeks of thin daily notes is enough to see a pattern. Five clear louder days plus a few quieter ones already help a short ME/CFS-aware or primary care slot. Consistent short fields beat sparse essays written the night before.
With Chronic Illness Journey, Insights get clearer as check-in days stack and can show whether post-exertional fatigue days repeated on the same pattern. A Doctor Report can turn those weeks into a one-pager when you want that page for the visit.
Why note sleep beside post-exertional fatigue days?
Unrefreshing or short sleep often makes post-exertional fatigue days louder and recovery slower. Without a sleep mark, every hard day gets blamed on one cause alone and overnight levers stay invisible. Keep the answer practical: what to date, what to bring to the visit, and what to leave for urgent care. Thin same-day marks beat a long catch-up written the night before.
Keep sleep beside related marks in Daily check-in inside Chronic Illness Journey. Insights can show whether louder days rose after broken nights — a wind-down or pacing clue for the next week. Dated fields in Chronic Illness Journey keep the week comparable so Insights can show whether louder stretches of chronic illness post-exertional fatigue days: what to capture repeated with the same sleep or load pattern.
Do quieter days still belong in the post-exertional fatigue days log?
Yes. Without contrast, every hard day looks inevitable. A thin easier mark teaches as much as a loud day. Quieter days also show whether a small routine change helped. Keep the answer practical: what to date, what to bring to the visit, and what to leave for urgent care. Thin same-day marks beat a long catch-up written the night before.
Still complete Daily check-in on calmer days in Chronic Illness Journey. Insights need that contrast to separate a repeating pattern from noise. Dated fields in Chronic Illness Journey keep the week comparable so Insights can show whether louder stretches of chronic illness post-exertional fatigue days: what to capture repeated with the same sleep or load pattern.
What belongs in a short visit summary for post-exertional fatigue days?
Dated pattern, severity, function limits, meds as prescribed, sleep, and two asks. Soft language beats a long speech: dates and function first. Keep the answer practical: what to date, what to bring to the visit, and what to leave for urgent care. Thin same-day marks beat a long catch-up written the night before.
List questions in My Care Team inside Chronic Illness Journey. Use a Doctor Report when a one-pager helps open the visit from weeks you lived rather than foggy recall. Dated fields in Chronic Illness Journey keep the week comparable so Insights can show whether louder stretches of chronic illness post-exertional fatigue days: what to capture repeated with the same sleep or load pattern.
Should I force a trigger label on every post-exertional fatigue days day?
No. Add a type word only when the link is obvious. Inventing a single villain from one Tuesday muddies the week. Onset and severity without a cause still teach. Keep the answer practical: what to date, what to bring to the visit, and what to leave for urgent care. Thin same-day marks beat a long catch-up written the night before.
Flare Tracker plus Daily check-in in Chronic Illness Journey can hold a clearly louder day without a fake cause. Insights can show repeating stacks when they exist — and stay quiet when the week is mixed.
Should I change medicines because of post-exertional fatigue days?
No — medication changes belong with your clinician. What you can do is date whether your already-prescribed plan was followed and how post-exertional fatigue days felt. Keep the answer practical: what to date, what to bring to the visit, and what to leave for urgent care. Thin same-day marks beat a long catch-up written the night before.
My Meds in Chronic Illness Journey holds timing as prescribed. Insights can show whether louder weeks rose when the plan drifted — without treating the app as a prescribing tool. Dated fields in Chronic Illness Journey keep the week comparable so Insights can show whether louder stretches of chronic illness post-exertional fatigue days: what to capture repeated with the same sleep or load pattern.
Can ChatGPT interpret my post-exertional fatigue days pattern?
It can help you list questions or soften visit wording. Clinical interpretation stays with your clinician. Tomorrow you still need dated notes from weeks you lived — not only a chat summary. Keep the answer practical: what to date, what to bring to the visit, and what to leave for urgent care. Thin same-day marks beat a long catch-up written the night before.
In Chronic Illness Journey, Clara and companions already see your logged history and can help with wording while Insights rest on what you checked in. Neither ChatGPT nor the app replaces clinical care.
What if I miss logging a post-exertional fatigue days day?
Resume the next day. A one-line catch-up is enough when you remember. Do not invent precise details for a gap you cannot honestly fill. Gaps are normal; fake precision is not. Keep the answer practical: what to date, what to bring to the visit, and what to leave for urgent care. Thin same-day marks beat a long catch-up written the night before.
Insights in Chronic Illness Journey still use the days you entered. Thin catch-up marks in Daily check-in keep the week readable without forcing a perfect streak. Dated fields in Chronic Illness Journey keep the week comparable so Insights can show whether louder stretches of chronic illness post-exertional fatigue days: what to capture repeated with the same sleep or load pattern.
What if post-exertional fatigue days limits work or care tasks?
Date the limit beside severity — delayed start, cancelled plan, shorter shift. Function is clinical data, not complaint. Those marks show life cost that an adjective hides. Keep the answer practical: what to date, what to bring to the visit, and what to leave for urgent care. Thin same-day marks beat a long catch-up written the night before.
Keep limits in Daily check-in or Daily Journal inside Chronic Illness Journey. Insights can show which weeks limited function most so you can protect one ask with dated evidence. Dated fields in Chronic Illness Journey keep the week comparable so Insights can show whether louder stretches of chronic illness post-exertional fatigue days: what to capture repeated with the same sleep or load pattern.
What if post-exertional fatigue days is worse the week before my period?
Cycle timing can shift symptoms for some people. Date period start and stop beside your marks so a pre-period week does not look identical to mid-cycle weeks. Skip inventing a hormone diagnosis from one cycle; bring the pattern to your clinician.
Use Period Tracker in Chronic Illness Journey when cycle timing sits next to post-exertional fatigue days. Insights can show whether louder days clustered in the same window across more than one month so you can bring a dated pattern to the visit.
When does post-exertional fatigue days need urgent care?
Chest pain emergencies, fainting with injury, or inability to drink/eat for prolonged periods need urgent care — not another pacing essay. If symptoms feel emergency-level, seek urgent care while you keep the log for later context.
For ordinary hard weeks, keep thin same-day marks in Chronic Illness Journey and call your clinician when symptoms jump quickly above your known pattern. Companions can help draft a calm call script; urgent decisions stay with clinicians.
Why does privacy matter for your health records?
Health notes are personal — symptoms, meds, mood, and what you cancelled. Treat any digital log as sensitive; on paper, keep the notebook somewhere only you control. Notes about post-exertional fatigue days deserve the same care as any other health record.
In Chronic Illness Journey, privacy is a first design priority: health data is encrypted in transit and at rest, communications are encrypted, and your data is not sold. It is built HIPAA-compliant and GDPR-ready. Share only what you choose with partners or clinicians.
Keep PEF marks short and dated — trigger, delay, severity, and next-day limits. In Chronic Illness Journey, crash days still leave a trail you can read.