患者男,40岁。因胸、腹部丘疹4年于2013年7月2日来我科就诊。患者4年前无明显诱因胸部出现少量米粒大红色丘疹,无任何不适,未于治疗。随后丘疹逐渐增多,波及上腹部及上肢。今年4月运动日晒后,大部分皮疹转为暗红色及褐红色。既往体健,否认家族中有类似疾病患者。体格检查:系统检查无异常。皮肤科检查:胸部、上腹部及上肢散在或密集分布暗红色或褐红色米粒大丘疹,部分表面扁平(图1A),圆形或椭 Male patient, 40 years old. Due to chest, abdomen, pimples 4 years in July 2, 2013 to our department. 4 years ago, no obvious incentive to patients with a small amount of rice chest red papules, without any discomfort, not in the treatment. Then gradually increased pimples, affecting the upper abdomen and upper limbs. After the sun shines in April this year, most rashes turn dark red and maroon. Past physical health, deny that family members have similar diseases. Physical examination: No abnormalities in the system examination. Dermatology examination: the chest, upper abdomen and upper limbs scattered or densely distributed dark red or brown rice large papules, part of the surface flat (Figure 1A), round or oval