Hair Foundation
HAIR DISEASE » Hair Injury (Scarring Alopecia)

Pseudopelade is a condition of unknown cause that slowly progresses from small patches of hair loss to large areas of permanent hair loss and scalp scarring. Lesions are not markedly inflamed. The incidence of the condition is higher in women than in men. Pseudopelade is frequently discovered when a small patch of hair loss is noted while combing, brushing or styling hair. The cause is unknown.

From article:
Hair Loss and Its Causes