在疟疾病程早期,不易与其它传染病相区别。一般患者主诉疲倦、乏力、肌痛,某些患者有头痛、腹痛和腹泻,则更易混淆诊断。早期体格检查无任何发现,后期脾肿大常见,肝肿大少见。但在疟疾热型尚未呈规律性发作时仍难确诊。假如为疟原虫混合感染,诊断则更不易。血涂片可获正确诊断,因为血清学试验不易区分现症感染还是以往感染,故不能 Early in the course of malaria, not easy to distinguish with other infectious diseases. General complaints of fatigue, fatigue, myalgia, some patients have headache, abdominal pain and diarrhea, then more confusing diagnosis. Early physical examination without any findings, common late splenomegaly, hepatomegaly rare. However, it is difficult to diagnose the malaria fever type before it has been regularly observed. If the mixed infection of malaria parasites, the diagnosis is even more difficult. Blood smear can be correctly diagnosed, because the serological test is not easy to distinguish the present infection or past infection, it can not