Most people will experience dizziness after a cold, which is a common symptom of a cold, and usually recover from dizziness for 3-5 days after a cold. There are many reasons for dizziness after cold, for example, the prostaglandins in the body will increase after cold, prostaglandins will cause cerebral vascular spasm, resulting in brain tissue in a state of oxygen deficiency, then the patient will appear dizzy symptoms; and fever will consume water in the body, brain tissue in a state of water deficiency, is also the cause of dizziness; in addition, nasal congestion, cough, lack of sleep can also cause dizziness. Dizziness after cold is mainly treated for cold, dizziness symptoms will disappear after the cold is cured, and the general treatment time required for cold is 3-5 days. Patients with dizziness after a cold must pay more attention to rest, ensure sufficient sleep, drink more hot water, light diet, if the symptoms are very heavy can take medication under the guidance of a doctor.