天冷戴帽子保暖是必要的,特别是老年人,头发多数比较稀少,而且体质虚弱、怕寒畏冷,因此出门时最好戴上帽子来保暖,不仅可避免风寒感冒、咳嗽,还可预防头痛、面神经麻痹等疾病。但医生指出,长时间戴帽子,会导致头皮毛孔呼吸不畅,皮脂堆积于头皮,容易形成皮屑、头痒或皮肤炎症,进而造成脱发。头发不耐闷热,紧扣在头上的帽子或头盔 Day cold wearing a hat warm is necessary, especially the elderly, most of the more scarce hair, and physical weakness, afraid of cold and cold, it is best to wear a hat to go out to keep warm, not only to avoid cold and cold, cough, but also prevent Headache, facial paralysis and other diseases. But the doctor pointed out that wearing a hat for a long time will result in poor breathing of the scalp pores, sebum accumulation in the scalp, easy to form dander, itchy or skin inflammation, resulting in hair loss. Hair impatient stuffy, tightly in the head of the hat or helmet