syndromic intellectual disability syndromic disease Hallermann-Streiff syndrome https://github.com/monarch-initiative/mondo/issues/4948 https://github.com/monarch-initiative/mondo/issues/6227 https://rarediseases.info.nih.gov/diseases/288/hallermann-streiff-syndrome https://www.malacards.org/card/hallermann_streiff_syndrome HSS NANDO:2200973 OMIM:234100 NCIT:C84746 MONDO:0009318 Hallermann Streiff Francois syndrome MEDGEN:5414 oculomandibulofacial syndrome Hallermann Streiff syndrome Francois dyscephalic syndrome Orphanet:2108 UMLS:C0018522 DOID:4534 Hallermann's syndrome MESH:D006210 François dyscephalic syndrome Hallermann-Streiff syndrome is a rare genetic syndrome characterized mainly by head and facial abnormalities such as bird-like facies (with beak-shaped nose and retrognathia), hypoplastic mandible, brachycephaly with frontal bossing, dental abnormalities (e.g. absence of teeth, natal teeth, supernumerary teeth, severe agenesis of permanent teeth, enamel hypoplasia) hypotrichosis, various ophthalmic disorders (e.g. congenital cataracts, bilateral microphthalmia, ptosis, nystagmus) and atrophy of skin (especially around the center of face and nose) as well as telangiectasia and proportionate short stature. Intellectual disability is reported in some cases. Hallermann syndrome SCTID:7903009 GARD:0000288 NORD:1888 FranC'ois dyscephalic syndrome Hallermann-Streiff syndrome multiple congenital anomalies/dysmorphic syndrome-variable intellectual disability syndrome obsolete malformation syndrome with short stature ectodermal dysplasia syndrome premature aging syndrome obsolete slender bone dysplasia obsolete congenital absence of the eyebrow/eyelashes obsolete craniofacial anomaly with cataract obsolete genetic multiple congenital anomalies/dysmorphic syndrome-variable intellectual disability syndrome primordial dwarfism and slender bone disorder