流行性出血热是由病毒引起的急性传染病。起病多急骤,有发热、头痛、腰痛、眼眶痛、恶心、呕吐等症状。部分病人有腹病、腹泻等症状。面、颈、上胸部有充血、潮红,重者似酒醉貌,眼结合膜、咽部充血。软腭、腋下、前胸等部位可见出血点。可伴有眼结合膜水肿及眼睑、面部浮肿,肾区有叩击痛。病程中有发热、低血压、少尿、多尿及恢复等五期经过。轻型病例可不 Epidemic haemorrhagic fever is an acute infectious disease caused by a virus. More rapid onset, fever, headache, back pain, orbital pain, nausea, vomiting and other symptoms. Some patients have abdominal disease, diarrhea and other symptoms. Face, neck, upper chest with congestion, flushing, severe cases like drunken appearance, eye combination membrane, throat congestion. Soft palate, armpits, chest and other parts of the bleeding can be seen. May be associated with ocular conjunctival edema and eyelids, facial edema, perimentricular percussion pain. During the course of fever, hypotension, oliguria, polyuria and recovery after five. Light cases may not