Monilethrix: the use of tricoscopy in clinical diagnosis

Monilethrix is a Greco-Latin term that mean "hair stick" 1 . It is a rare genetic disorder with autosomal dominant inheritance, characterized by degeneration of the hair matrix and formation of defective cuti- cle. The hairs are brittle and not exceed a few inches length. The scalp is the most affected region and the most common clinical presentation is alopecia associated with keratosis follicularis 2,3 . The diagnosis is clinical and the tricoscopia evidence moniliformes changes (switching between wide and narrow band) 1 .