春秋季节,一些人常在夜间入睡后或早晨起床时突然出现一阵阵的干咳,咳出很多带泡沫的白色痰,并感到胸闷、气短,甚至不能平卧,严重者指甲、口唇还出现紫绀;但到室外后症状就会立即缓解,或突然消失。不少患者对此都感到诧异和不解,其实这是一种叫“尘螨”的小东西引起的过敏性哮喘病。 Spring and autumn, some people often fall asleep at night or get up in the morning when a sudden burst of dry cough, cough out a lot of white sputum with foam, and feel chest tightness, shortness of breath, or even supine, severe nail, lips also appear cyanosis; However, the symptoms will be relieved immediately or disappear suddenly. Many patients are surprised and puzzled by this, in fact, this is a kind of allergic asthma caused by small things called “dust mites”.