Urticaria pigmentosa and systemic mastocytosis.
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D002965:Classification; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008407:Mast Cells; D014582:Urticaria Pigmentosa