Hallermann Streiff Syndrome: A Comprehensive Medical Review Introduction Hallermann-Streiff syndrome (HSS), also known as oculomandibulodyscephaly with hypotrichosis, is an extremely rare genetic disorder first described by François Aubry in the late 1800s and later characterized as a distinct clinical entity by Wilhelm Hallermann in 1948 and Enrico Streiff in 1950. According to the National Organization …
Hall Riggs Syndrome: A Comprehensive Medical Review Introduction Hall-Riggs syndrome is an extremely rare autosomal recessive genetic disorder first described by Hall and Riggs in 1975, characterized by a distinctive constellation of features including severe intellectual disability, microcephaly, distinctive facial dysmorphisms, and progressive spondylometaphyseal dysplasia. According to Orphanet, the European reference portal for rare diseases, …
Hall Hittner Syndrome (CHARGE Syndrome): A Comprehensive Medical Review Introduction CHARGE Syndrome or Hall-Hittner syndrome, more widely recognized as CHARGE syndrome, is a rare autosomal dominant genetic disorder first described independently by Hall and Hittner in 1979. The condition was initially named after these pioneering researchers who identified the constellation of clinical features that characterize …
Halasz Syndrome (Scimitar Syndrome): A Comprehensive Medical Review Introduction Halasz syndrome, more commonly known as scimitar syndrome, is a rare complex congenital cardiovascular malformation first described by George Cooper in 1836 and later characterized by Halasz and colleagues in 1956, who first used the term “scimitar” to describe the characteristic radiographic appearance. This syndrome is …
Halal Setton Wang Syndrome (Hidrotic Ectodermal Dysplasia, Halal Type): A Comprehensive Medical Review Introduction Halal-Setton-Wang syndrome, also known as hidrotic ectodermal dysplasia, Halal type, is an extremely rare autosomal recessive genodermatosis first described by Dr. Fady Halal and colleagues in 1991. This condition represents a distinct form of ectodermal dysplasia syndrome characterized by a unique …
Hal Berg Rudolph Syndrome (Pseudoprogeria Syndrome): A Comprehensive Medical Review Introduction Hal-Berg-Rudolph syndrome, also known as pseudoprogeria syndrome, is an extremely rare autosomal recessive neurodevelopmental disorder first described in the medical literature in 1974. According to Orphanet, the European reference portal for rare diseases, this condition is characterized by a constellation of clinical features including …
Hajdu Cheney Syndrome: A Comprehensive Medical Review Introduction Hajdu Cheney syndrome (HCS) is an extremely rare autosomal dominant connective tissue disorder characterized by progressive bone resorption, distinctive craniofacial features, and multisystem involvement. First described by Nicholas Hajdu in 1948 and further characterized by William Douglas Cheney in 1965, this syndrome represents one of the rarest …