Dizziness and weakness is a common clinical symptom, caused by a number of reasons, common causes are the following aspects: 1, anemia, anemia is one of the most common clinical causes of dizziness and weakness symptoms of the disease, you can improve the blood test to make a clear diagnosis. If there is anemia, further examination is needed to clarify the specific cause of anemia, for the cause of the cause of the treatment. 2, low blood pressure, often have a long time squatting after getting up when the symptoms of dizziness, weakness, also called postural hypotension. It is because the blood can’t redistribute in time to cause transient ischemia and hypoxia in the brain after squatting for a long time, which results in dizziness, blackness and general weakness. It can be clearly diagnosed by measuring the blood pressure, and take the oral solution for symptomatic treatment.3. Hypoglycemia, not only the symptoms of dizziness, general weakness, but also accompanied by palpitations, cold sweat and other symptoms, the symptoms can be relieved after eating.