There are many reasons for sudden general weakness, the common causes are mainly the following: 1, cerebrovascular diseases, such as cerebral hemorrhage, large cerebral infarction caused by brain dysfunction, can appear the symptoms of weakness, need to improve the head examination to clarify the specific causes, targeted treatment. 2, physiological factors, such as poor sleep quality, overexertion, after excessive exercise can also appear the above symptoms. 3, viral colds, mostly due to viral attacks when the body’s resistance is reduced. Not only will have the symptoms of general weakness, but also accompanied by fever, chills, sore throat and other clinical manifestations, by taking cold medicine, such as Lianhua Qingfei capsule, cold granules can effectively relieve the symptoms.