Congenital pili torti - Hair and Scalp
PT is usually congenital but may occur in the first and second years of life. The classic type of PT is a diffuse abnormality usually found in association with thin blond hair, occurring alone or as part of an ectodermal dysplasia syndrome. A rare late-onset variant of PT is inherited in an autosomal dominant fashion, mostly in patients with jet-black hair, and is characterized by alopecia of the scalp, face, and body hair that develops after puberty.
Q84.1 – Congenital morphological disturbances of hair, not elsewhere classified
17170005 – Pili torti
Differential Diagnosis & Pitfalls