The causes of dizziness and nausea after swimming are generally considered to include vestibular dysfunction, hypoglycemia and sympathetic excitation.
1. Vestibular dysfunction: Swimming can cause changes in body position and speed, causing vestibular dysfunction, which can easily cause a feeling similar to motion sickness, motion sickness or seasickness, mainly manifested in dizziness, nausea and vomiting and other symptoms.
2. Hypoglycemia: Swimming is a kind of physical exercise, which is easy to lead to a large amount of energy loss, causing hypoglycemia symptoms, and also induces nausea, vomiting and dizziness.
3. Sympathetic nerve excitation: lead to increased contractility of the heart muscle, resulting in increased blood pressure and rapid heartbeat, may also occur dizziness; sympathetic nerve excitation will also cause peripheral vasoconstriction, resulting in hypoxia and ischemia of the internal auditory arteries, inducing nausea and dizziness symptoms.
In addition, we can not rule out the possibility of other factors, if rest and food still can not be relieved, it is necessary to go to the regular hospital to improve the examination, according to the cause of the disease, under the guidance of the doctor active treatment.