chromosomal disease Prader-Willi syndrome MESH:D011218 OMIM:176270 GARD:5575 A chromosomal disease that is characterized by weak muscle tone, feeding difficulties, poor growth, and delayed development. Beginning in childhood, affected individuals develop an insatiable appetite, which leads to chronic overeating and obesity. ICD9CM:759.81 ICD10CM:Q87.11 disease_ontology ORDO:739 SNOMEDCT_US_2020_03_01:205794007 NCI:C75463 DOID:11983 UMLS_CUI:C0032897 OMIM mapping confirmed by DO. [SN]. Prader Willi syndrome syndrome