穿羽绒服轻便、美丽、暖和。盖羽绒被轻松柔软、舒适温暖。但是,有些人穿羽绒服或盖羽绒被后,全身会出现大小不等、形状不一、界线清楚、颜色浅红、周围有红晕、略高出皮肤、瘙痒难忍的硬性丘疹或团块,称为荨麻疹:也可表现为鼻咽痒、流涕、喷嚏、咳嗽、胸闷等。若过敏发生在喉头,可引起喉部水肿,发 Wear down jacket light, beautiful, warm. Cover down soft and comfortable, comfortable and warm. However, some people wear down jackets or cover duvet, the body will appear in different sizes, different shapes, clear boundaries, color light red, surrounded by flush, slightly above the skin, itchy unruly hard papules or lumps, said Urticaria: can also be manifested as nasopharyngeal itching, runny nose, sneezing, cough, chest tightness and so on. If allergies occur in the throat, can cause throat edema, hair