Urticaria pigmentosa in patients closely related by birth.
D000293:Adolescent; D002648:Child; D005260:Female; D006632:Histamine / Q000097:blood; D006801:Humans; D008457:Measles / Q000150:complications; D014582:Urticaria Pigmentosa / Q000209:etiology / Q000235:genetics*
D006632:Histamine