Severe anemia
Brain abscess
Bubbles of air in your blood vessels (arterial gas embolism)
Burns
Carbon monoxide poisoning
Crushing injury
Deafness, sudden
Decompression sickness
Gangrene
Infection of skin or bone that causes tissue death
Nonhealing wounds, such as a diabetic foot ulcer
Radiation injury
Skin graft or skin flap at risk of tissue death
Traumatic brain injury
Vision loss, sudden and painless"
https://www.mayoclinic.org/tests-procedures/hyperbaric-oxygen-therapy/about/pac-20394380