10级大5上皮肤性病学06-urticaria.pptx

urticaria;Basic requirements;urticaria;Etiology and pathogenesis;Etiology;Etiology;Etiology;Etiology;Etiology;Etiology;Etiology;disease of internal organ.;pathogenesis;Mast cell activation, is a central part of the urticaria occurs. ;Clinical manifestations;Wheals itching;According to the course;Acute urticaria;Acute urticaria; It always occurs abruptly, it will evolve over days to weeks ,producing evanescent wheals that individually rarely last more than 12 hours ,with complete resolution of the urticaria within 6 weeks of onset.;Allergic shock : Blood pressure of patients may fall Abdomen ache Panicky ,dysphoria,nausea and vomitus Dyspnea High fever ,shivering;chronic urticaria;Special sorts of urticaria;Dermatographism;cold urticaria; Cholinergic urticaria;Cholinergic urticaria ;Solar urticaria;angioedema;Diagnosis and misdiagnosis;Diagnosis Typical clinical manifestations: wheals, fast appearing and diminishing, no trace after diminishing and specialties at every phase . It can be diagnosed easily ,but cause –diagnosis are very difficult in many cases. ; The identification of regular urticaria and papules urticaria. Gastrointestinal type urticaria and identification and the acute gastroenteritis ;Treatment;Treatment Systemic treatment Acute urticaria Mainstay of treatment of acute urticaria is administration of antihistamines. ;Chronic urticaria Looking for the real reason is very important .corticoid must avoid. Anti-histamine is important ,and the use of blocking agent of H1.2 receptor is better for combined treatment .; Shock Immediate injection with 0.1% adrenalin at 0.5ml by subcutaneous part may save the life ; inspiring with oxygen; meanwhile intravenous injection with hydrocortisone at 0.2 to 0.3 g in 500ml glucose is necessary. use antihistamine;荨麻疹是由于皮肤、粘膜小血管扩张及渗透性增 加而出现的一种局限性水肿反应;肥大细胞活化是荨麻疹发生的中心环节;临床表现圆形、椭圆形或