Decompression illness (DCI) is a serious condition caused by rapid changes in pressure, most commonly affecting divers, aviators, and astronauts. When the body experiences sudden pressure reductions, nitrogen gas bubbles can form in the bloodstream and tissues, leading to various symptoms ranging from mild joint pain to life-threatening neurological complications. Hyperbaric Oxygen Therapy (HBOT) is the primary and most effective treatment for decompression illness, helping to reduce gas bubbles, restore oxygen supply, and prevent long-term damage. Early intervention is crucial in managing DCI effectively, making medical attention imperative.

What is Decompression Illness?
Decompression illness refers to two conditions that arise from rapid pressure changes:
- Decompression Sickness (DCS): This occurs when nitrogen gas, absorbed at high pressures (such as deep-sea diving), forms bubbles during rapid decompression, affecting joints, muscles, and the nervous system.
- Arterial Gas Embolism (AGE): This happens when gas bubbles enter the arterial circulation, potentially causing blockages that can lead to strokes or organ damage.
Common Causes of DCI:
- Rapid ascent while scuba diving.
- High-altitude flying without proper decompression.
- Aerospace travels with sudden pressure fluctuations.
- Working in pressurized environments like submarines or mines.
Risk Factors:
- Divers ascending too quickly or skipping decompression stops.
- Pilots experiencing sudden cabin depressurization.
- Astronauts transitioning from space to Earth’s atmosphere.
- Miners working in high-pressure underground conditions.
Symptoms of Decompression Illness
The symptoms of decompression illness can vary from mild to severe and require immediate medical evaluation.
Mild Symptoms:
- Joint and muscle pain (often called “the bends”).
- Fatigue and dizziness.
- Itchy skin or rash.
Severe Symptoms:
- Paralysis or muscle weakness.
- Breathing difficulties and chest pain.
- Confusion, vision problems, or unconsciousness.
Recognizing these warning signs early and seeking Hyperbaric Oxygen Therapy (HBOT) can prevent further complications.
How Decompression Illness Affects the Body
When a person ascends too quickly, nitrogen gas dissolved in the blood due to high-pressure forms bubbles. These bubbles can:
- Obstruct blood flow, reducing oxygen supply to vital organs.
- Causes joint and muscle pain by accumulating in tissues.
- Damage the nervous system, leading to dizziness, numbness, and cognitive impairment.
- Impact the lungs and heart, resulting in severe respiratory distress.
If left untreated, DCI can lead to permanent neurological damage and other complications.
Hyperbaric Oxygen Therapy (HBOT) as a Treatment for DCI
Hyperbaric Oxygen Therapy is the gold-standard treatment for decompression illness. HBOT works by:
- Delivering 100% oxygen at high pressure, allows more oxygen to dissolve into plasma and tissues.
- Reducing the size of nitrogen bubbles in the bloodstream.
- Enhancing oxygen supply to damaged tissues and promoting healing.
- Decreasing inflammation and preventing long-term neurological impairment.
Medical Guidelines for HBOT in DCI Treatment
- HBOT treatment usually begins within 6 hours of symptom onset for best results.
- Sessions typically involve exposure to 2.8 ATA (atmospheres absolute) of pressure.
- Treatment frequency varies depending on severity, often requiring multiple sessions.
Effectiveness of HBOT in Treating Decompression Illness
Scientific research and medical case studies have consistently demonstrated the effectiveness of HBOT in treating decompression illness.
- A study published in the Undersea & Hyperbaric Medicine Journal showed that HBOT significantly reduced neurological symptoms in DCI patients.
- A case study of a diver with severe DCS reported a full recovery after undergoing a series of HBOT treatments.
- The U.S. Navy and Divers Alert Network (DAN) recommend HBOT as the primary treatment for DCI.
Potential Risks and Side Effects of HBOT
While HBOT is highly effective and generally safe, some side effects may occur:
- Mild Side Effects: Ear pressure, dizziness, temporary vision changes.
- Rare Complications: Oxygen toxicity, lung barotrauma, claustrophobia.
These risks are minimized by following medical protocols and receiving treatment at a certified hyperbaric facility.

Preventing Decompression Illness
Preventative measures can significantly reduce the risk of DCI.
- Gradual Ascents: Divers should follow proper decompression stops.
- Hydration: Staying well-hydrated reduces nitrogen accumulation.
- Fitness & Health: Maintaining good cardiovascular health improves circulation.
- Routine Medical Checkups: Divers, aviators, and high-altitude workers should undergo regular evaluations to ensure fitness for such activities.
Conclusion
Decompression illness is a potentially life-threatening condition that requires immediate medical attention. Hyperbaric Oxygen Therapy (HBOT) remains the most effective treatment, providing rapid relief by reducing nitrogen bubbles, improving oxygen delivery, and preventing long-term damage. Whether you are a diver, or pilot, or work in high-pressure environments, understanding DCI symptoms, prevention, and HBOT treatment can be life-saving.
If you or someone you know experiences decompression sickness, seek expert HBOT treatment at Lakeshore Hyperbaric Center. Our state-of-the-art facility provides advanced hyperbaric oxygen therapy to ensure effective recovery. Contact us today to schedule a consultation and receive the care you need.