冬春季节有的人皮肤常常发痒，先是从人体四肢，然后发展到胸、背，特别是夜晚痒得更加厉害。这种现象主要是因为冬春季气候寒冷、干燥，皮肤易龟裂，易脱屑，引起发痒。也有人是因为皮脂腺和汗腺分泌机能较差，容易使皮肤发痒。皮肤发痒，最好不要用手搔痒．以免抓破皮肤，引 Some people in winter and spring skin often itchy, first from the human limbs, and then developed to the chest, back, especially at night itch even more powerful. This phenomenon is mainly due to the cold weather in winter and spring, dry, easy to crack the skin, easy scaling, causing itching. It is also because of sebaceous glands and sweat secretion of poor performance, easy to make the skin itchy. Itchy skin, it is best not to scratch it by hand. In order to avoid scratching the skin, lead