Type of disease: Rare conditions
Hanhart syndrome is a rare birth defect in which the main signs are a short, incompletely developed tongue (hypoglossia); absent or partially missing fingers and/or toes (hypodactylia); malformed arms and/or legs (peromelia); and an extremely small jaw (micrognathia).The severity of these physical abnormalities varies greatly among individuals, and children with this disorder often have some, but not all, of the symptoms. The cause of Hanhart syndrome is not fully understood. It appears to occur sporadically, being unlikely to recur in a family. Treatment may involve orthopedic and/or plastic surgery for limb abnormalities. Source: Genetic and Rare Diseases Information Center (GARD), supported by ORDR-NCATS and NHGRI.