skin disorder Hartnup disease https://github.com/monarch-initiative/mondo/issues/4985 https://github.com/monarch-initiative/mondo/issues/9285 https://rarediseases.info.nih.gov/diseases/6569/hartnup-disease https://www.malacards.org/card/hartnup_disorder MEDGEN:6723 NANDO:2200487 Hartnup disease is a rare metabolic disorder belonging to the neutral aminoacidurias and characterized by abnormal renal and gastrointestinal transport of neutral amino acids (tryptophan, alanine, asparagine, glutamine, histidine, isoleucine, leucine, phenylalanine, serine, threonine, tyrosine and valine). NORD:1217 HND GARD:0006569 DOID:1060 MESH:D006250 MONDO:0009324 Hartnup disease OMIM:234500 UMLS:C0018609 MedDRA:10019165 Orphanet:2116 SCTID:80902009 NCIT:C84748 aminoaciduria, Hartnup type Hartnup disorder hereditary photodermatosis disorder of neutral amino acid transport inborn disorder of amino acid transport obsolete nephropathy secondary to a storage or other metabolic disease obsolete_Hartnup disease