What Is Telogen Effluvium?

Hair shedding, or telogen effluvium, occurs when a higher-than-normal percentage of scalp hairs enter the resting (telogen) phase of the hair growth cycle and are subsequently shed. Under normal conditions, about 10% of scalp hairs are in the telogen phase, and it is typical to lose around 100 hairs daily as they are naturally replaced by new growth. However, certain events can disrupt this cycle, leading to excessive hair shedding.

CAUSES

Hair shedding can result from factors that create a “shock to the system,” disrupting the natural hair growth rhythm. Common causes include:

  • Childbirth
  • High fever
  • Sudden weight loss or crash dieting
  • Surgery
  • Severe illness
  • Severe stress or emotional loss

SYMPTOMS

  • Excessive hair shedding, particularly near the front of the scalp.
  • Noticeable hair on pillows, in sinks, or clogging drains.
  • White “club” at the end of shed hairs, indicating they were already in the telogen phase.

Treatment

No special treatment is required for telogen effluvium. The condition typically resolves on its own as the body returns to its normal rhythm. Most, if not all, of the shed hair grows back over time. Normal shampooing can continue, as it only loosens hairs that were already prepared to fall out. Monitoring stress levels and maintaining a balanced diet may help support recovery.

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