正常人在激烈运动或重体力劳动后,常会出现疲乏劳累的感觉,但通常经过一定时间的休息,疲劳即可消除。这种疲劳属于生理性疲乏。但有些人无任何原因地经常感到疲乏就需要寻找原因了,因为它常可能是以下某种疾病的先兆或早期症状, 血液病常觉疲乏是贫血、白血球减少的症状之一。慢性贫血时,由于肌体的调节作用,在安静的情况下,就是较严重的贫血也不至于出现疲乏症状,但一经从事轻微的体力活动,疲乏感就非常突出;白细胞减少症的早期惟一症状就是疲乏无力。因此,有明显乏力症状者 After intense exercise or heavy manual work, normal people often feel tired and tired, but usually they can be relieved of fatigue after a certain period of rest. This fatigue is physiological fatigue. But some people often feel tired for any reason you need to find a reason, because it may often be a precursor of some of the diseases or early symptoms of blood disease often feel tired anemia, leukopenia symptoms. Chronic anemia, due to the body’s regulatory role in the case of quiet, is more severe anemia does not appear tired symptoms, but once engaged in minor physical activity, fatigue is very prominent; the only symptoms of leukopenia is the early Tired and weak. Therefore, there are obvious symptoms of fatigue