Overview
Decompression sickness happens when nitrogen bubbles form after coming up too fast.
Barotrauma is damage from pressure changes in the ears, sinuses, or lungs.
Symptoms
Common signs:
- Joint pain or numbness after diving
- Trouble breathing
- Confusion
Less common
- Ear pain
When to get medical care
Causes
Gas bubbles, pressure.
Who is more likely to get it
- Diving
Possible complications
- Burst eardrum: From pressure changes
- Collapsed lung (pneumothorax): From lung barotrauma
Diagnosis
This is diagnosed in the emergency room or hospital.
The exam
A physical exam.
Tests
Tests, if needed:
- Exam:
Treatment
Emergency care is needed. While waiting for help:
Self-care
- Breathe oxygen if available
- Call 911 and DAN
Prevention
To lower your risk or prevent problems:
- Ascend slowly
- Don't fly within 24 hours of diving
Which doctor treats this
- Emergency doctors treat it first, in the ER.
Back to school, work, or sports
- Recovery time varies. Ask your care team when you can drive, lift, work, and exercise.
Children, pregnancy, and older adults
- Divers: Get training.
For caregivers
- Go to visits when you can and take notes.
- Keep a list of medicines, allergies, and doctors in one place.
- Learn the warning signs that need fast care.
- Take breaks and ask for help. Caregivers need care too.
Outlook
Fast oxygen helps.
Getting ready for your visit
Bring a list of your symptoms and medicines.
What to bring
- A list of your medicines and supplements
- Notes on when symptoms started and what makes them better or worse
Questions to ask
- What follow-up care do I need?
- How can I prevent this from happening again?
Research studies
Research studies test new ways to find and treat health problems. Some are looking for volunteers. Talk with your doctor before joining one.
Search ClinicalTrials.gov for studies on Diving injuries (decompression sickness and barotrauma)
Sources
Last updated 2026-11-12.