四、临床常见的Ⅰ型变态反应性疾病(一)过敏性休克是一种最严重的Ⅰ型变态反应,致敏患者通常在接触变应抗原后数分钟之内出现症状。其主要表现为:烦躁不安,鼻咽发痒,胸闷、气急,呼吸困难,恶心、呕吐,腹痛、腹泻,循环衰竭,血压下降,以致意识障碍,昏迷,抽搐等,若抢救不及时,可导致死亡。 Fourth, the clinical common type Ⅰ allergic diseases (A) anaphylactic shock is one of the most serious type Ⅰ allergic reactions, allergic patients are usually within a few minutes after exposure to allergens symptoms. Its main manifestations are: irritability, itchy nasopharynx, chest tightness, shortness of breath, dyspnea, nausea, vomiting, abdominal pain, diarrhea, circulatory failure, decreased blood pressure, resulting in disturbance of consciousness, coma, convulsions, etc., if the rescue is not timely, death.