男性，足月急产，出生体重3200g，因生后哭声不畅11小时入院，发育成熟五官端正无畸形，面色红润，全身有散在大小不等的黑色斑点，臀部会阴部大片黑色斑块，无毛，皮肤表面稍粗，界限清楚。余未见异常。否认有家史，父母非近亲婚配，母孕期体健，无服药史。入院后一般情况尚好 Male, full-term acute birth, birth weight 3200g, due to postnatal crying 11 hours admitted to hospital, mature and mature facial features without deformity, ruddy, body scattered in varying sizes of black spots, buttocks perineal large black patches, Glabrous, slightly thicker skin surface, clearly defined. I no abnormalities. Denied family history, parents non-relatives marriage, pregnant women during pregnancy, no medication history. After admission, the general situation is still good