Hair shedding and thinning: when to seek help
2026-10-29 21:26:18 · 7 min read · Reviewed
Some shedding is normal. Sudden, heavy or patchy loss, or loss with scalp symptoms, deserves professional assessment.
Normal shedding
Most people lose some hairs daily as part of the growth cycle. You may notice more shedding after washing if you wash less often, simply because more hairs are released at once.
Patterns that deserve attention
- Sudden, diffuse shedding after an illness, high fever, childbirth, significant stress, crash dieting or starting/stopping a medication. This pattern is often temporary (telogen effluvium) but the trigger should be identified.
- Gradual thinning on the top of the scalp, or a widening parting, which is often hereditary.
- Patchy bald spots, which can indicate an autoimmune condition and should be assessed promptly.
- Itching, pain, burning or visible inflammation on the scalp.
- Shedding with other symptoms such as fatigue, weight change or menstrual changes — these can point to nutritional or hormonal causes that need blood tests.
What a clinician may do
A doctor or dermatologist will usually take a history, examine the scalp, and may order blood tests (for example iron stores, thyroid function, vitamin D) or examine hairs under a microscope. Treatment depends entirely on the cause.
Please do not
- Do not start high-dose supplements, minoxidil or prescription medicines based on an app recommendation. Some of these have real side effects and some are unsafe in pregnancy or for certain conditions.
- Do not assume that a cosmetic product can reverse a medical cause of hair loss.
What this app will do
HairCare Companion helps you notice and record patterns, gives you education about common causes, and — if you report warning signs — prioritises a clear recommendation to seek professional care. It does not diagnose.
Sources
- American Academy of Dermatology — Hair loss: who gets it and causes (public patient information)
- NHS — Hair loss (public patient information)