skin disorder acquired kinky hair syndrome https://www.malacards.org/card/acquired_kinky_hair_syndrome Orphanet:37559 MEDGEN:537918 MONDO:0018302 GARD:0018826 UMLS:C0263486 Acquired progressive kinking of the hair (APKH) is a rare hair disorder characterized by the appearance of lustreless, curly, frizzy, and coarse hair generally during adolescence predominantly in the frontal, temporal, and vertex regions of the scalp. Eyelashes, as well as growth and pigmentation of the hair, may also be affected.