Headache after swimming

Swimming uses sustained effort, and holding or changing your breathing pattern can tense the neck and scalp. Pool heat, outdoor sun, or not drinking before and after exercise may contribute to dehydration or heat-related symptoms. Tight goggles can press around the eyes and temples. Chlorine or water entering the nose may irritate nasal passages; Allergic Rhinitis and Chronic Sinusitis can also cause congestion and facial pressure.

Headache with ear pain, hearing change, fever, rash, or worsening facial pain should be assessed rather than attributed to swimming alone. A headache after open-water swimming also calls for attention to cold exposure and the conditions around the swim.

Stop exercising, move somewhere cool, loosen tight goggles, and sip water. Rest until breathing and temperature feel normal. Eat a snack if you have not eaten, and avoid returning to the water while dizzy or unwell. Use well-fitting eye protection, warm up gradually, and take regular fluid breaks on future swims. Note distance, intensity, water temperature, weather, goggles, and associated symptoms.

Call emergency services for collapse, confusion, severe breathlessness, chest pain, blue lips, seizure, a sudden severe headache, or weakness or trouble speaking. Get urgent medical advice for persistent vomiting, faintness, severe dizziness, or a headache after a near-drowning or head impact. Arrange review when headaches recur after swimming, last beyond the activity, or occur with fever or ear symptoms. Heat Exhaustion and Dehydration are useful related topics.

Could exertion, breathing technique, goggles, heat, dehydration, or nasal irritation explain my symptoms? Should I change my exercise routine, and when is it safe to swim again?