Medical Issues in Scuba Diving
Diving places unique demands on the human body. While most recreational dives go smoothly, it is important to understand the medical risks that can arise underwater, how to prevent them, and what to do if something goes wrong. This section brings together key conditions, practical advice, and the underlying science, all grounded in training-level relevance without unnecessary complexity.
Being informed is not about fear, it is about responsibility. The more you know about diving-related medical issues, the better your decisions, your dive planning, and your ability to help others.
Equalization Techniques
Most effective techniques for equalizing ear pressure during descent, including Valsalva, Toynbee, and Frenzel. Clear your ears comfortably and safely.
Motion Sickness: Prevention, Medication & Hacks That Work
How to prevent and manage motion sickness. Proven medications, helpful onboard tips, and personal strategies for staying comfortable on dive boats.
Understanding Nitrogen Narcosis
Learn what it is, how it affects divers at depth, and how to manage its risks. Includes symptoms, mitigation strategies, and why it’s a concern.
Decompression Illness: DCS, AGE, and PFO Risk
Learn the differences between DCS and AGE and how a PFO can raise risk. Get prevention tips and step by step emergency actions for safer diving.
(CNS) Oxygen Toxicity
Most rec divers never see CNS oxygen toxicity, but the consequences are immediate and severe. If you dive nitrox, you need to know the risks.
Avoiding Leg Cramps
If your legs seize up during surface swims or long finning, you’re not alone. Here’s how to cut the problem down and keep diving comfortably.