A 10-year-old boy presented with multiple circumscribed patches of abnormal hair on scalp []. The first patch was noticed on vertex at the age of 7 years. This was followed by the development of three new patches during the last 1 year; two on both temporal areas and one on the occipital area. The hairs in the affected area were thicker, curlier, with random hair shaft orientation, and normal underlying scalp. Trichoscopy revealed abnormal kinking of hair shafts []. Varying diameters of a single hair shaft [], trichorrhexis nodosa-like features [], kinking, and damaged cuticle [], with normal pigmentation were observed on hair microscopy. Color of the affected hair shafts was dark and uniform. These characteristic features were absent on microscopy of normal surrounding hair shafts []. Histopathology showed abnormal bending of the hair follicle above the hair bulb [], and irregularities of inner root sheath near the bulb at the bending []. A detailed cutaneous and systemic examination along with cardiac, ophthalmic, dental, skeletal, and nervous systems evaluation did not reveal any gross abnormality.
We present a 3-year-old healthy girl, whose mother was concerned about recent hair changes. The patient had no personal or family history of cutaneous diseases. At physical exam, the girl had a phototype II skin, normal teeth and nails. The back of the scalp revealed a well-circumscribed patch of kinky, curly light blonde hair. The rest of the physical exam was normal. Dermoscopy was not performed at the time.\nWoolly hair nevus was diagnosed. The parents were counseled about the benign and chronic nature of this lesion. Ophthalmologic evaluation was recommended, but the parents of the patient refused. No further studies were performed [Figures and ].