Dizziness after smoking may be caused by insufficient cerebral blood supply due to vasodilatation caused by smoking. Insufficient cerebral blood supply includes insufficient blood supply to the cerebellum and brainstem and insufficient blood supply to the vertebral basilar arterial system, and insufficient blood supply to the cerebellum and brainstem may lead to dizziness, nausea, balance disorders, and ataxia, which is mainly due to vasodilatation caused by the nicotine in the cigarettes. In addition, smoking may also cause an increase in blood pressure, which can also cause dizziness, so it is important to stop smoking. If blood pressure is elevated blood pressure lowering treatment should be given, commonly used drugs are amlodipine and irbesartan. If dizziness is severe, drugs to improve blood circulation can also be applied, such as oral ginkgo biloba drops, cipro, or vertigo stop and pethidine, and the patient should be instructed to take proper rest at the same time.