Incontinentia pigmenti and urticaria pigmentosa.
D000015:Abnormalities, Multiple / Q000235:genetics; D006801:Humans; D008407:Mast Cells / Q000473:pathology; D010859:Pigmentation Disorders / Q000473:pathology*; D012867:Skin / Q000473:pathology; D013577:Syndrome; D014582:Urticaria Pigmentosa / Q000473:pathology*