Embolisms (air or gas bubbles in the bloodstream, which may travel to the brain or lungs);

Carbon monoxide poisoning (from inhaling smoke or car exhaust)

Gas gangrene

Crush injury, Compartment Syndrome and other acute traumatic problems where blood flow is  reduced or cut off (e.g., frostbite)

Decompression sickness (the bends)

Enhancement of healing for wounds such as diabetic foot ulcers

Exceptional blood loss (anemia)

Intracranial abscess (an accumulation of pus in the brain)

Necrotizing soft tissue infections (flesh-eating disease)

Osteomyelitis (bone infection)

Delayed radiation injury (e.g., radiation burns that develop after cancer therapy)

Skin grafts and flaps that are not healing well

Thermal burns (e.g., from fire or electrical sources)

Sudden Hearing Loss