What Are the Signs of Decompression Sickness and What Should I Do?

Recognising and Responding to Decompression Sickness

Knowing the signs of DCS and how to respond can mean the difference between a full recovery and lasting injury. DCS can appear within minutes to 48 hours after a dive, with most cases presenting within 6 hours.

DCS Symptoms by Type

What to Do If You Suspect DCS

1. Stop diving immediately — do not re-enter the water under any circumstances
2. Administer 100% emergency oxygen — continuous flow from the boat's DAN kit
3. Lie down — horizontal position preferred, or recovery position if nauseated
4. Hydrate — drink water if conscious and able to swallow
5. Call DAN Emergency: 0061 8 8212 9242 — they provide immediate medical guidance
6. Transport to Siloam Hospital — fastest possible route to the hyperbaric chamber
7. Do NOT fly — altitude worsens DCS dramatically

When to Be Suspicious

Any unusual symptom after diving should be treated as potential DCS until proven otherwise. Pain that you might normally attribute to "a tough dive" or "sleeping funny" could be DCS, especially if it appeared after diving. When in doubt, seek assessment — early treatment leads to better outcomes.