The Hair Loss Encyclopedia
rare genetic disorder causing brittle hair and developmental issues
Trichothiodystrophy (TTD) is a rare genetic disorder characterized by brittle hair due to a deficiency in sulfur-containing proteins. It often involves other symptoms such as intellectual disability, developmental delays, and photosensitivity. The condition is linked to mutations in genes involved in DNA repair and transcription, making it a complex syndrome with a wide range of clinical manifestations.