If a patient has symptoms of dizziness after smoking, consider the following reasons: 1. If the patient smokes a lot, it is easy to induce spasms in the patient’s cerebral blood vessels, causing the patient’s cerebral blood supply to be inadequate and manifesting as symptoms of dizziness. 2. If the patient smokes for a long time, it can lead to a weaker body, which is also easy to have symptoms of dizziness when smoking. 3. If the patient smokes, if the tobacco does not burn sufficiently, the carbon monoxide content in the smoke will be too much, and the inhalation will lead to a decrease in the oxygen-carrying capacity of the hemoglobin in the patient’s blood, thus causing dizziness.