Which Hashimoto's symptoms should I track?

Track the symptoms commonly associated with an underactive thyroid: fatigue, brain fog, cold intolerance, hair loss, dry skin, weight change, constipation, low mood and muscle aches. Pick the four or five that actually bother you rather than logging every possible symptom, because a short list gets kept and a long list gets abandoned.

How often should I log thyroid symptoms?

Daily one-tap logging is enough, and it is more useful than long written entries. Thyroid symptoms drift over weeks, so the value comes from a consistent series of quick marks rather than from detail on any single day.

Do TPO antibody levels need to be tracked over time?

No. TPO antibodies are the marker associated with Hashimoto's thyroiditis and are usually measured once to help make the diagnosis, rather than followed as a trend. Following antibody levels over time does not track how the thyroid is doing.

Thyrowise

Tracking Hashimoto's symptoms so the appointment is worth something.

Fifteen minutes, twice a year, and the honest answer to "how have you been feeling?" is usually "fine, I think". A log turns that into a pattern your doctor can actually use.

The problem with remembering

Hashimoto's thyroiditis is the most common cause of an underactive thyroid, and what makes it hard to describe is the timescale. Symptoms move over weeks and months, not hours. By the appointment you are reporting how the last three days went, weighted by how today is going — which is not the question being asked.

Background: Hashimoto's Thyroiditis, American Thyroid Association; Hashimoto's Disease, NIDDK.

What is worth logging

The symptoms commonly associated with an underactive thyroid are the ones to start from: fatigue, brain fog, cold intolerance, hair loss, dry skin, weight change, constipation, low mood, muscle aches.

Source: Hypothyroidism, American Thyroid Association; Hypothyroidism (Underactive Thyroid), NIDDK.

Pick four or five of them, not all of them. A short list gets kept for a year; a long one gets abandoned in three weeks, and three weeks of data is worth nothing when the interval that matters is six months.

How often, and how much detail

Daily, and almost no detail. A one-tap mark beats a paragraph, because the thing you are building is a series — and a series survives only if logging costs you five seconds on a bad day. Detail is for the days when something unusual happens: a missed dose, a new supplement, a week of illness.

Log these too, or the symptoms mean less

Dose changes — with the date. Without them, a symptom trend has no cause to be lined up against.
Lab results — with the date drawn, not the date you were told.
New medications and supplements — particularly calcium, iron and magnesium, which block levothyroxine absorption and need at least four hours of separation.

What not to bother tracking

TPO antibodies. They are the marker associated with Hashimoto's and are usually measured once, to answer a diagnostic question — following the number over time does not track how the thyroid is doing. The same goes for thyroglobulin antibodies, which are reported against each laboratory's own cut-off rather than one shared number.

Sources: ATA, NIDDK, MedlinePlus.

Arriving with something readable

An endocrinologist has minutes, not an evening. What lands is one page: the TSH series with dose changes marked on it, and the symptom counts for the period either side of each change. Not a diary. Not a screenshot of an app you have to explain first.

The question that page answers is the only one worth the appointment: after the last adjustment, did anything actually change?

What Thyrowise does about it

Symptoms are one-tap chips on the home screen. Labs, doses and dose changes share the same timeline. Pro turns all of it into a one-tap PDF built for handing across a desk, plus a CSV if you would rather keep your own copy.

The insights are counts of your own logs, stated as counts — "fatigue on 19 of the last 30 days, against 8 in the 30 before". No score, no AI guess about what it means. What it means is a conversation with your doctor.

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Thyrowise is a tracking and reminder tool. It is not a medical device and does not give medical advice, diagnosis or treatment. Reference ranges are approximate and vary between laboratories. Always follow your doctor's plan; never change your dose based on the app.

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