1.持续低热 正常人的体温为37℃,如果每日体温达到37.6℃～38℃,就是低热。引起低热的常见原因有结核、慢性淋巴结炎、慢性肝炎、甲亢、风湿热、细菌性心内膜炎等。 2.持续头痛 感冒、缺少睡眠等的头痛是暂时的,而持续头痛则预示着严重病变,应到神经内科检查。 3.反复咳嗽 咳嗽不止或一段时期内反复咳嗽,应该作胸透或摄全胸片。常见的原因有支气管炎、肺炎、支气管扩张、肺结核、肺癌等。 4.不明瘀伤 皮肤经常出现青紫瘀伤,不易消退,常提示血液凝结机制障 1. Persistent low fever normal body temperature of 37 ℃, if the daily body temperature reached 37.6 ℃ ~ 38 ℃, is the low heat. Common causes of fever are tuberculosis, chronic lymphadenitis, chronic hepatitis, hyperthyroidism, rheumatic fever, bacterial endocarditis and so on. 2. Continuous headache Cold, lack of sleep and other headaches are temporary, while continuing headaches indicate a serious disease, should go to the neurology examination. 3. Cough repeatedly Cough more than or repeated for a period of time cough, chest X-ray or full chest radiograph should be made. Common causes of bronchitis, pneumonia, bronchiectasis, tuberculosis, lung cancer and so on. 4. Unidentified bruises often appear purple bruises, not easy to subside, often prompted the mechanism of blood coagulation