Frequent dizziness, lack of energy and fatigue can be caused by functional diseases and organic diseases. 1. Functional diseases: such as anxiety, insomnia, depression, late night, excessive psychological pressure, etc. can lead to physical symptoms such as dizziness, weakness, lack of energy, easy to fatigue, hair loss, emaciation and so on. 2. Organic diseases: such as anemia, hyponatremia, hypokalemia, neoplastic diseases, cerebrovascular disease, vitamin deficiency, etc. can also lead to frequent dizziness, weakness, lack of energy and fatigue symptoms. Frequent dizziness, lack of energy and easy fatigue, it is recommended that patients seek early medical treatment, under the guidance of a professional physician to clarify the cause of the disease, and carry out the appropriate treatment.