A teenager girl presented with diffuse non-cicatricial alopecia involved the vertex and crown areas of the scalp with preservation of the frontal hair line. The condition started one year ago and the patient didn’t deny the habit of hair pulling under stressful conditions. The involved areas were not completely bald but the hairs were cut at different levels above the scalp surface.
A 23-year-old male presented with a well-demarcated solitary patch of non-cicatricial hair loss of two weeks duration. Many exclamation mark hairs are seen in the central area.
Monilethrix is a congenital hair shaft defect in which the hair shafts have alternate swellings (nodes) and constrictions, producing beaded effect. The hair usually is normal at birth, but in the first months hairs begin to break off 1–2 centimeters above the surface. It is often associated with keratosis pilaris and nail changes; rarely dental anomalies and juvenile cataracts. Spontaneous improvement in puberty or pregnancy sometimes occurs.
One day after hair dying a pruritic and burning swollen red rash appeared on the face specially around the eyes. The patient presented 2-3 weeks after the onset of the rash.
