Feeling dizzy after you swim can hamper your plans and lead you to avoid swimming altogether. Most of the time, dizziness after swimming is mild and short-lived and not a cause for medical concern. Prevent or treat dizziness after swimming by making dietary changes and altering your swimming style. Meanwhile, seek care for any underlying medical conditions that can cause dizziness.
You might experience dizziness each time you swim, or just when you use certain swimming strokes or perform certain maneuvers in the pool. Your dizziness might last for just a moment or two, or it could last for several hours or even days after you finish your swim, depending on the cause. In addition to the dizziness, you might experience additional symptoms such as headache, decreased endurance or performance while swimming, or a feeling that you are spinning.
Getting water inside your ear is a common occurrence while swimming. This can cause you to feel dizzy until the water has a chance to drain out, which could take hours or even days. Low blood sugar can result in dizziness, especially if you were swimming for a long time or did not eat before you swam. Similarly, as peculiar as it sounds, you can feel dizzy because of dehydration while swimming. If you suffer from allergies or asthma, pollen in the air around the pool or pool chemicals such as chlorine could cause you to feel dizzy after a swim. According to the American Academy of Otolaryngology, feeling anxious, stressed or tense before or during your swim can reduce the circulation of blood to your brain, resulting in dizziness. In addition, sudden movements of your head while swimming, referred to by doctors as benign positional vertigo, may also cause you to feel dizzy.
Most cases of dizziness after swimming are mild and temporary and require no medical treatment, explains the American Academy of Otolaryngology. Your doctor may recommend allergy medication to treat your allergies, or medication or dietary changes to treat low blood sugar and dehydration. If your dizziness is related to vertigo, your doctor might check to ensure that you do not have any underlying cardiac or neurological disorders, and you might need to take medication to treat the vertigo if it is severe.
Wear earplugs while you swim to prevent dizziness that results from water getting into your ears. Eat a small snack before you swim to prevent low blood sugar, especially if you plan to swim for a long period of time. In addition, stay well hydrated by drinking water or a sports drink before you swim.