Does telogen effluvium cause hair loss?

Telogen effluvium happens when more hairs than usual shift into the resting phase of the hair cycle and then shed. People may notice hair on a pillow, in a shower drain, or on a brush. Shedding is often spread across the scalp rather than forming one sharply defined bald patch, and the scalp may look more visible because several areas lose density at once.

The trigger may have occurred weeks or months before the shedding became obvious. Hair loss can also have other causes, so the pattern, scalp examination, recent health events, medicines, nutrition, and family history help a clinician distinguish possibilities.

Track when shedding began and whether it is changing. Make a list of recent fever or illness, surgery, rapid weight change, stressful events, new medicines, and changes in diet. Handle hair gently, avoid tight hairstyles and harsh chemical processing, and eat regular balanced meals that include adequate protein. Do not start supplements or stop a prescribed medicine without medical advice.

A clinician can examine the scalp and decide whether blood tests or another evaluation is appropriate. Treatment focuses on finding and addressing a trigger while allowing the hair cycle to recover.

Arrange a medical assessment if shedding is sudden or heavy, continues without improvement, or comes with scalp pain, scaling, redness, itching, broken hairs, or smooth patches. Seek prompt care for hair loss with symptoms such as marked fatigue, fainting, unexplained weight change, or other signs of illness. A dermatologist can check for conditions that need different treatment.

Ask what pattern your hair loss shows, which recent events could have triggered shedding, whether a scalp examination or tests are useful, and how long recovery may take. You can also ask which styling practices to pause and what changes should prompt an earlier review.