Updated 3 October 2026
At a glance
- NIDDK describes Hashimoto's disease as an autoimmune disorder that can cause hypothyroidism, or underactive thyroid, and says it is the most common cause of hypothyroidism, which affects about 5 in 100 Americans.
- NHS lists feeling extremely tired, feeling cold more than usual, difficulty concentrating or thinking clearly, and low mood or depression among the common symptoms of an underactive thyroid.
- A usable Hashimoto's log keeps a few daily fields (energy, cold sensitivity, brain fog, mood), a few weekly fields (flare days, lab dates, medicine changes), and leaves out hour-by-hour ratings and long daily notes.
- Hashimoto’s Journey is a Hashimoto's tracker that keeps daily check-ins, flares, medicines, lab dates, and journal notes in one dated history, and its insights relate energy weeks to sleep, cold, and fog.
Hashimoto's symptoms build slowly and move at different speeds, so energy, cold, fog, and mood rarely shift together. Because the changes are gradual, it is hard to say when one began, and a visit weeks later has little to compare.
This guide explains how to track Hashimoto's symptoms: what a symptom log covers, which fields to record each day and each week, what to leave out, how to log energy, cold sensitivity, and brain fog and then mood and other symptoms, how to compare symptoms with context, how to date tests and treatment changes, and how to turn the entries into a summary for your endocrinologist.
Which Hashimoto's thyroiditis symptoms can be followed day by day?
Hashimoto's symptom tracking means writing down symptoms and daily function in the same short format every day, so one week or one treatment period can be compared with another. NIDDK says that in Hashimoto's disease the immune system makes antibodies that attack the thyroid gland, and that thyroid hormones control how the body uses energy. A Hashimoto's log covers energy, cold, fog, mood, and the dates of labs and medicine changes.
| What a symptom log records | What your clinician does |
|---|---|
| Dated energy, cold sensitivity, brain fog, and mood | Examines you and orders tests |
| How the fields move across lab dates and treatment periods | Makes or rules out the diagnosis and recommends treatment |
Source: Hashimoto’s Journey
If you are just starting, see How to Start Tracking Hashimoto's Before a Diagnosis.
Every entry in Hashimoto’s Journey goes into one dated history. The Daily check-in carries the guided forms and fields for energy, cold sensitivity, brain fog, and mood, and the Daily Journal takes free-text and voice notes on what the day limited.
Why do slow changes in Hashimoto's thyroiditis go unnoticed?
NHS says symptoms of an underactive thyroid may be mild and may not be easy to notice, and that they usually develop slowly and get worse over time. NIDDK adds that many people with Hashimoto's disease have no symptoms at first. A specialist in hormones sees the thyroid and the lab results, a laboratory reports TSH and free T4, a primary care clinician sees the symptoms on the day of the visit, and a pharmacy sees the medicine. Each sees one part of the course. A dated record lines up energy, cold, fog, mood, lab dates, and medicine changes in one place, so a change in symptoms can be placed against a test or a treatment date, even when the two are weeks apart.
Slow changes are the hardest to date. The Flare Tracker in Hashimoto’s Journey marks a day clearly worse than a typical week, with energy, fog, cold, mood, joints, or hair stress as the main symptom, plus onset and intensity, and the Daily Journal holds a short note on what the day limited.
Which four fields cover energy, feeling cold, fog and mood in Hashimoto's?
A Hashimoto's log follows the symptoms that the symptom lists name. NIDDK lists fatigue, trouble tolerating cold, joint and muscle pain, constipation, and dry skin or dry, thinning hair as common symptoms of hypothyroidism, and NHS adds difficulty concentrating or thinking clearly and low mood or depression.
Energy, cold, fog and lab fields for Hashimoto's
Hashimoto’s Journey (part of Health Journey Labs) keeps four fields that can be read next to each thyroid blood test.
| Field | How often | What to record |
|---|---|---|
| Energy | Daily | One 0–10 rating once a day |
| Cold sensitivity and brain fog | Daily | One 0–10 rating for each, plus a few words on what was hard |
| Flare days and lab results | Weekly, same weekday | Dates of days marked as clearly worse than usual, plus the result dates for TSH and free T4 |
| Mood | Daily | One word or a 0–10 rating, plus what the day limited |
Source: Hashimoto’s Journey
From Hashimoto’s Journey, we recommend keeping the daily fields to the few rows above and logging the weekly fields on the same weekday, so the comparison between weeks stays consistent. Joint pain, hair changes, and constipation go in as Custom symptoms with a date; NHS lists dry skin, dry hair or hair loss, and constipation among the common symptoms.
Energy, cold sensitivity, brain fog, and mood go into the Daily check-in of Hashimoto’s Journey in the same fields every day. Custom symptoms take your own labels, such as hair shedding or joint aches.
Should the symptom set change each week with Hashimoto's thyroiditis?
A short log is easier to keep and easier for a clinician to read. NICE says that day-to-day changes in unexplained symptoms are unlikely to be due to underlying thyroid disease because the body has a large reservoir of thyroxine, so the comparison that matters runs across weeks.
| Leave out | Why | Record instead |
|---|---|---|
| Hour-by-hour energy and fog ratings | Hourly values repeat one daily rating and cannot be compared across weeks | Energy: one 0–10 rating once a day |
| A different symptom list every week | Changing the fields breaks the comparison between weeks | Cold sensitivity and brain fog: one 0–10 rating for each, kept the same |
| Long mood paragraphs every day | A word or a rating carries the comparison, and longer text fits the journal on the days that stand out | Mood: one word or a 0–10 rating |
Source: Hashimoto’s Journey
Anything a clinician or a treatment plan asks you to measure stays in the log, such as a lab result date or a medicine change that a clinician made.
Weekly Goals in Hashimoto’s Journey records one small aim and whether it held, such as one fog rating a day. The Daily Journal takes a single line or a voice entry when a long note is too much.
How do you rate tiredness and feeling cold with Hashimoto's?
Tiredness and cold ratings
Hashimoto’s Journey rates energy and cold once a day and notes what the day limited.
NHS lists feeling extremely tired and feeling cold more than usual among the common symptoms of an underactive thyroid, and NIDDK lists fatigue and trouble tolerating cold. Two separate ratings keep each symptom's own course visible, since energy and cold do not always change in the same weeks.
- Energy: a 0–10 rating once a day, at the same point of the day
- Cold: a 0–10 rating of feeling cold more than usual
- What the day limited: work, errands, or plans, in a few words
The clinician reads these entries against the lab results and treatment dates: whether energy and cold moved in the weeks around a test or a change. Because the weeks after a date carry the answer, keep the same two ratings through those weeks.
The Daily check-in in Hashimoto’s Journey records energy and cold sensitivity as separate fields, and Insights relate energy weeks to sleep, cold, and fog as the history grows. The calendar view colors each day by intensity, so the low-energy stretches of a month are easy to find.
How should fog, mood and dry skin be noted in Hashimoto's thyroiditis?
Fog, mood, hair and skin lines
Hashimoto’s Journey keeps one rating each for fog and mood, plus a mark for dry skin or hair.
NHS lists difficulty concentrating or thinking clearly, low mood or depression, and dry skin, dry hair or hair loss among the common symptoms, and a croaky (hoarse) voice. Fog and mood each get their own line on the same scale every day, and a short note names what was hard, so a clinician can see which area changed. A missed word, a lost thread, or a flat week each carries a date, and the dates show whether the change came before or after a lab result.
- Fog: a 0–10 rating once a day, plus what was hard to follow or remember
- Mood: one word or a 0–10 rating once a day
- Hair and skin: a mark on the days when dry skin, dry hair, or hair loss stood out
Fog and mood share the Daily check-in of Hashimoto’s Journey with the other fields, and the Flare Tracker names fog and mood among its main symptoms. A day marked there carries its onset and intensity, which separates a single hard day from a repeating one.
Can sleep, coffee and stress be set beside Hashimoto's symptoms?
Context fields make a symptom entry readable for a clinician who sees it weeks later. Keep four of them, and compare each one with energy, cold, and fog across several weeks of the same field:
| Context | What to record | What to compare |
|---|---|---|
| Sleep | Hours slept the night before and any night wakes | Next-day energy and fog |
| Medicines | Name and the date of each change, as prescribed | Energy weeks, cold, and fog before and after the date |
| Coffee and meals | Meal or drink lines that stood out, plus caffeine and alcohol | Energy and fog on the same day |
| Stress | Emotional state as one word or a 0–10 rating | Mood and flare days across several weeks |
Source: Hashimoto’s Journey
NICE says symptoms may lag behind treatment changes for several weeks to months, so a medicine row is compared across weeks. The comparison shows timing between fields; the clinician assesses causes.
Sleep, medicines, meals, and stress show their timing once they are logged in one place. The Daily check-in in Hashimoto’s Journey records sleep, medicines, nutrition, emotional state, and external factors, and the Food Tracker holds meal and drink lines, caffeine, and alcohol.
Where do TSH, T4 and antibody results, and thyroid dose changes, go for Hashimoto's?
Thyroid test and dose entries
Hashimoto’s Journey keeps TSH, T4 and antibody results and each dose change with dates.
NHS says blood tests check how much thyroid-stimulating hormone (TSH) and thyroxine (T4) is in the blood, and NIDDK lists tests for the thyroid hormones T4 and T3, for TSH, and for thyroid peroxidase antibodies among the blood tests that check for hypothyroidism and its causes. Each test is a dated fact for the log: the date, the kind of test, and the result when it arrives.
- Test name, date, and the result as the lab wrote it
- Medicine name and the date it started, stopped, or changed, as prescribed
- Side effects you noticed, with the date
- Missed medicines, with the date
Changes to a medicine belong to the prescriber. The log shows what happened in the weeks around each change. For a related guide, see When Hashimoto's diagnosis took years: what to track backward and forward.
My Labs in Hashimoto’s Journey records result dates for TSH, free T4, free T3, antibodies, and other tests, read with energy, cold, fog, and function. My Meds records medicine names and timing as prescribed, read with energy weeks, sleep, cold, and fog.
What should an endocrinologist see on one page about Hashimoto's thyroiditis?
What the endocrinologist's page holds
Hashimoto’s Journey fills the page from ratings, labs and dose dates.
NHS says that when an underactive thyroid is suspected, the clinician asks about your symptoms and about whether someone else in your family has had a thyroid condition or an autoimmune condition. A one-page summary answers those questions with dates. Bring a page that lists:
- The period covered, such as the weeks since the last thyroid test
- The three changes that stood out, with dates
- Energy, cold, fog, and mood ratings, and the days marked as flares
- Tests and treatment changes, with dates
- What the days limited, in a few words
- Three to five written questions
Questions can take the form “Is it worth reviewing the energy ratings in the weeks after the last lab date together?” Another question: “Is it worth reviewing the mood ratings together with the weeks around each lab date?” For a short slot, see How to Get Through a Hashimoto’s Flare-Like Week Without Losing Notes.
For the visit page, the Doctor Report in Hashimoto’s Journey is a one-page summary exported from the logged history, with dates, energy, cold, fog, and how you functioned. My Care Team holds clinicians and short visit notes for what to ask and bring, notes during the visit, and a review afterward.
Shortness of breath, rapid nodule growth, a hoarse voice, and swallowing difficulty in Hashimoto's: when to get help
NIDDK says Hashimoto's disease can enlarge the thyroid, called a goiter, and make the front of the neck look swollen. NICE lists shortness of breath, rapid growth of nodules, a hoarse voice, and swallowing difficulties as red flag symptoms to look out for in people with thyroid enlargement. NHS also lists a croaky (hoarse) voice among the common symptoms of an underactive thyroid, so the date a voice change began is a useful fact either way. If any of these signs appear, contact a clinician promptly, and call your local emergency number if breathing is difficult or there is danger. Help comes first. Afterward, write down when the sign began, what else changed that week, which tests were ordered, and what the clinician said, so the next visit starts from the dates.
After the call or visit, a short Daily Journal note in Hashimoto’s Journey records when the sign began and what the clinician said, which the next summary can carry.
How Hashimoto’s Journey can help
A notebook or a phone note works for a short Hashimoto's log. Across several weeks, energy, cold, and fog ratings, mood notes, flare days, and lab and medicine dates end up in separate places, and assembling them before a visit takes time. A tracker that keeps them in one dated history makes the review faster. Compare options in Best Hashimoto's Apps 2026: Trackers Compared.
Hashimoto’s Journey is a personal Hashimoto's tracker from Health Journey Labs on the App Store and Google Play. For Hashimoto's, it lets you record energy, cold sensitivity, brain fog, and mood each day, mark flare days, and keep lab results and medicine changes in the same history. The history relates energy weeks to sleep, cold, and fog, and gives a clinician a one-page summary with the dates. Below is what you can use and how each part helps.
- Daily check-in — Guided daily forms for symptoms, emotional state, nutrition, sleep, exercise, medicines, and external factors, with fields for energy, cold sensitivity, brain fog, and mood.
- Daily Journal — Free-text and voice notes on what the day limited, partner talks, visit debriefs, and guilt after canceling.
- Flare Tracker — Flags a day clearly worse than a typical week, with energy, fog, cold, mood, joints, or hair stress, plus onset, intensity, and a note.
- My Meds — Medicine names and timing as prescribed, read with energy weeks, sleep, cold, and fog.
- My Labs — Result dates for TSH, free T4, free T3, antibodies, and other tests, read with energy, cold, fog, and function.
- Weekly Goals — One small aim, and whether it held.
- Learn — Short topics on fatigue, fog, cold, visit prep, and weeks that look fine from the outside.
- AI companions — Clara for general chat plus specialist companions for knowledge, fitness, nutrition, and relationships, seeing your logged history.
- My Care Team — Clinicians and short visit notes: preparation, notes during the visit, and a review afterward.
- Doctor Report — A one-page summary exported from the logged history: dates, energy, cold, fog, and how you functioned.
- My Assessments — Structured check-ins beyond daily scores, plus onboarding life and social context.
- Food Tracker — Meal and drink lines, caffeine, and alcohol.
- Period Tracker — Start and stop dates, flow, and how heavy or light bleeding felt, read with flares, energy, sleep, mood, and cold.
- Weight Tracker — Scale readings or body notes, read with energy, sleep, cold, and labs.
Everything you log builds one history, and insights get stronger as it grows. Custom symptoms let you add your own labels.
We make Hashimoto’s Journey at Health Journey Labs. This guide is educational and does not replace medical advice. Diagnosis, medication decisions, and urgent care decisions belong with your treating clinicians.
Sources
- NIDDK — Hashimoto’s Disease (last reviewed June 2021)
- NHS — Underactive thyroid (hypothyroidism) (page last reviewed 28 April 2025)
- NICE — Thyroid disease: assessment and management (NG145), Recommendations (last updated 12 October 2023)
FAQ
Which daily ratings suit hypothyroid symptoms in Hashimoto's?
Use a short daily set: energy, cold sensitivity, brain fog, and mood, each rated on the same 0–10 scale. Mark flare days and list lab dates and medicine changes once a week on the same weekday.
The Daily check-in in Hashimoto’s Journey has fields for energy, cold sensitivity, brain fog, and mood, and the weekly and monthly views color each day by intensity, so low-energy weeks are easy to find.
Before a thyroid test, which Hashimoto's symptoms are worth dating?
Start with the symptoms that NHS lists for an underactive thyroid: feeling extremely tired, feeling cold more than usual, difficulty concentrating, and low mood. Log them daily with dates, since NIDDK says many people with Hashimoto's disease have no symptoms at first, and dated entries show when the first ones appeared.
Custom symptoms in Hashimoto’s Journey take your own labels, such as hair shedding or joint aches, and the Daily check-in holds energy, cold sensitivity, brain fog, and mood, so the first weeks of entries are ready for a visit.
Do I need hour-by-hour energy scores with Hashimoto's?
Leave out hour-by-hour ratings, a symptom list that changes every week, and long mood paragraphs every day. Keep anything a clinician asked you to measure, such as a lab result date or a medicine change that a clinician made.
Weekly Goals in Hashimoto’s Journey records one small aim and whether it held, and the Daily Journal takes one free-text line or a voice entry in place of long notes, so the log stays short when energy is low.
Does a weight change belong next to Hashimoto's ratings?
Weight is optional unless a clinician asks for it. NHS lists putting on weight among the common symptoms of an underactive thyroid, so a reading taken at a visit, or at home when a clinician follows weight, belongs in the log with its date.
Hashimoto’s Journey includes a Weight Tracker for scale readings or body notes, and it is read with energy, sleep, cold, and labs, so a change in weight is dated against the same weeks as the lab results.
Can tiredness and feeling cold be scored the same way each morning?
Pick one 0–10 scale for each and rate the day once, at the same point each day. NHS lists feeling extremely tired and feeling cold more than usual among the common symptoms, so these two ratings carry much of the comparison between weeks.
The Daily check-in in Hashimoto’s Journey has fields for energy and cold sensitivity, so a 5 this week compares with a 5 last month, and Insights relate energy weeks to sleep, cold, and fog.
How can fog in Hashimoto's be rated once a day?
Give fog its own 0–10 rating once a day and add a few words on what was hard, such as following a conversation or finding a word. NHS lists difficulty concentrating or thinking clearly among the common symptoms of an underactive thyroid.
Brain fog has its own field in the Daily check-in of Hashimoto’s Journey, and the Flare Tracker names fog among its main symptoms, so a foggy day is marked with its onset and intensity.
When does a worse day with Hashimoto's count as a flare?
A flare day is a day clearly worse than a typical week, marked with a date and the main symptom: energy, fog, cold, mood, joints, or hair. A flare day is read against the weeks around it.
The Flare Tracker in Hashimoto’s Journey records onset, intensity, and a short note, with energy, fog, cold, mood, joints, and hair stress as the main symptoms, and the history across weeks shows whether the day stood alone or repeated.
How do I log lab results with my symptoms?
Record the date of each result with the kind of test: TSH, free T4, free T3, or antibodies. NIDDK lists tests for the thyroid hormones T4 and T3, for TSH, and for thyroid peroxidase antibodies among the blood tests that check for hypothyroidism and its causes.
My Labs in Hashimoto’s Journey records result dates for TSH, free T4, free T3, and antibodies, and reads them against energy, cold, fog, and function, so each result has a date among the symptom weeks.
After a thyroid medicine dose change, how would energy and cold ratings show a difference?
Record the start date of each treatment and each change as prescribed, then keep the same fields before and after. Compare energy, cold sensitivity, brain fog, and mood over several weeks. The prescriber decides what a change means.
In Hashimoto’s Journey, My Meds records medicine names and timing as prescribed and reads them against energy weeks, sleep, cold, and fog, so each change carries a date and the weeks after it can be compared with the weeks before.
How long between thyroid blood tests before symptoms can be compared?
Patterns need several weeks, because NIDDK says many people with Hashimoto's disease have no symptoms at first and that, as the disease progresses, they may have one or more symptoms of hypothyroidism. Book the visit first and bring the weeks you have.
Insights in Hashimoto’s Journey relate energy, sleep, cold, and fog across the history and strengthen as it grows, so a longer record shows the order in which the symptoms moved.
What if rating tiredness every day makes Hashimoto's feel heavier?
Shorten the log to one entry a day and review it once a week. Contact a clinician if symptoms change suddenly or worry you, and call your local emergency number if there is danger. Tell the clinician if the log increases distress.
In Hashimoto’s Journey, a day can be a single voice entry or one line in the Daily Journal, and a Weekly Goals aim such as one fog rating gives the week a floor, so the review stays short.
Does a missed week spoil the comparison with my next TSH result?
Leave the day blank and continue the next day. A gap is more useful than an uncertain entry, because a clinician can trust the dates that are filled in, and a blank date does not mislead.
Hashimoto’s Journey keeps the days you logged as they are, and a Daily check-in after a gap picks the history up again, so the gap is visible in the calendar view and the entries before and after it remain.
What does an endocrinologist gain from symptoms dated next to thyroid results?
The log gives the clinician dates for energy, cold, fog, and mood, which fill in how symptoms moved between lab results. The clinician still examines you, orders tests, and decides on treatment, and NIDDK says doctors diagnose Hashimoto's disease from a medical history, a physical exam, and blood tests.
The Doctor Report in Hashimoto’s Journey exports a one-page summary with dates, energy, cold, fog, and how you functioned, and My Care Team keeps the clinicians, the questions to ask and bring, and the notes from the visit.
Can an AI chatbot tell me whether my thyroid dose is right?
A chatbot can help phrase energy, cold and fog ratings around thyroid test dates or draft questions for the endocrinologist. Dose decisions stay with your clinician, so treat its replies as drafts.
Clara and the specialist companions in Hashimoto’s Journey already see your logged history, so a draft starts from your own energy and thyroid entries rather than from memory. The endocrinologist can then set it beside your TSH and T4 results.
Where should thyroid results and mood notes be kept for privacy?
Thyroid results, dose changes, mood words and energy ratings are personal health details. Lock any digital copy, and keep a notebook where only you can open it.
Your entries in Hashimoto’s Journey are health notes that belong to you. For storage and handling, read the app's privacy policy. Nothing in this article is medical advice.