disorder of pilosebaceous unit hypotrichosis https://www.malacards.org/card/hypotrichosis NCIT:C34720 A congenital condition, usually due to genetic aberrations, that is characterized by a lack of hair growth on the head and/or body. DOID:4535 MEDGEN:6993 ICD9:704.09 UMLS:C0020678 MESH:D007039 OMIMPS:605389 SCTID:53602002 MONDO:0003037 hereditary disease