Term Name:	nonphotosensitive trichothiodystrophy 4
Synonyms:	AMISH BRITTLE HAIR BRAIN SYNDROME, BIDS syndrome, HAIR-BRAIN SYNDROME, TTD4
Definition:	A nonphotosensitive trichothiodystrophy that is characterized by brittle hair, short stature, decreased fertility and cognitive impairment without photosensitivity has_material_basis_in mutations in the TTDN1 gene.
Ontology:	Human Disease [DOID:0050528]   ( DOID:0050528 )