Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
A: Sparse scalp hair at 5 years of age. The surface of the scalp is partially exposed because of hair loss. B–E: Scanning electron microscopy images of the patient’s hair at 5 years of age. (B) Trichorrhexis represented as a focal longitudinal vulnerable lesion of the hair shaft. (C) The hair shaft showing a sagged or peeled surface. (D) Trichoptilosis represented as a longitudinal splitting and cracking lesion at the distal end of the hair shaft. (E) Misshapen and depressed hair bulb.
