If patients experience dizziness after sun exposure, there are usually several factors as follows: 1. dehydration, high sweating after sun exposure, excessive loss of body fluids will occur in the case of heavy sweating, which will lead to dehydration of the body when there is excessive loss and loss of body fluids, dehydration will lead to insufficient blood volume, and insufficient blood volume leads to dizziness. 2. along with the loss of body fluids after sun exposure sweating, it will also cause A certain degree of ionic disorder. For example, hypokalemia, hyponatremia, hypochlorhydria, etc. Hypokalemia can cause dizziness to increase significantly. Therefore, the ions in the body should be replenished at this time.3. If a series of heat stroke occurs under strong sun exposure, heat cramps, heat exhaustion, pyrexia, etc., there will also be clinical manifestations of dizziness.