Acute telogen effluvium: what to know

The trigger shifts many growing hairs into a resting phase, so shedding may become noticeable later rather than immediately. The scalp usually looks normal, without scarring, although overall density and the width of the ponytail can decrease.

Possible triggers include a significant illness, fever, surgery, rapid dietary change, major emotional strain, childbirth, or a medication change. Some people cannot identify a single trigger. Hair tends to come out from across the scalp rather than forming one smooth bald patch. Acute telogen effluvium presents with increased hair loss and may make thinning hair more visible, but it does not usually destroy the follicles.

Handle the hair gently, avoid tight styles and harsh chemical processing, and eat regular meals with adequate protein and varied nutrients. Do not start high-dose supplements solely because shedding has increased; unnecessary products can obscure an underlying deficiency or cause side effects. A clinician can review the timing of illnesses, life events, diet, and medicines, examine the scalp, and decide whether blood tests or targeted treatment are appropriate.

Do not stop a prescribed medicine without guidance. Options such as topical minoxidil, supplement therapy, or PRP require an individual assessment because they are not automatically needed for every episode.

Arrange a medical review if shedding is persistent, rapidly worsening, patchy, or accompanied by scalp pain, redness, heavy scale, sores, or broken hairs. Seek assessment as well if you have fatigue, unexplained weight change, menstrual changes, symptoms of anaemia, or dietary restriction. These details can point to another cause that needs specific care.

Ask whether the distribution fits telogen effluvium, which recent events or medicines may be relevant, whether the scalp shows another disorder, and whether testing for iron status, thyroid function, or other deficiencies suits your history. Clarify what changes should prompt follow-up and whether any proposed treatment addresses the trigger, supports regrowth, or only improves appearance.