Hartnup disease.
D002648:Child; D002675:Child, Preschool; D005260:Female; D006250:Hartnup Disease / Q000150:complications / Q000188:drug therapy / Q000235:genetics / Q000378:metabolism; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D009422:Nervous System Diseases / Q000209:etiology; D009536:Niacinamide / Q000627:therapeutic use; D015499:Renal Tubular Transport, Inborn Errors / Q000209:etiology; D014364:Tryptophan / Q000378:metabolism; D014804:Vitamin B Deficiency / Q000209:etiology
D009536:Niacinamide; D014364:Tryptophan