Dizziness is a very common symptom and can be caused by many factors, such as the effects of medications and cardiac arrhythmias. If you experience dizziness, in addition to resting as much as possible, eating smaller meals and avoiding fatty foods can help relieve the discomfort. If you have been dizzy for more than 2 weeks, you should go to the hospital for further examination. Usually, tests such as blood count, blood pressure, heart rate, blood sugar, etc., and even hearing tests and CT scan of the head may be required. There are several general causes of dizziness: First, diseases of the middle and inner ear, such as otitis media and Meniere’s syndrome. Cold and flu viruses can also cause inner ear problems and even trigger phenomena such as vomiting. Second, the effect of drugs, some blood pressure drugs, heart and diabetes drugs, and even cold-sensitive drugs may have this side effect. Third, cardiac arrhythmia, heart disease makes the brain oxygen supply is not normal, can cause dizziness, which slow heartbeat affect more. Fourth, some chronic diseases, such as diabetes, bronchial disease, kidney disease, etc., if poorly controlled, will also appear the above situation. Fifth, anemia, during pregnancy or women with heavy menstruation, can reduce the oxygen content of the blood, resulting in dizziness.