HBO is significantly useful in following treatment as primary / adjective & is most Safe o Attention–deficit/hyperactivity disorder (ADHD) o Autism o Air or gas embolism o Cancer o Carbon monoxide poisoning/smoke inhalation o Cerebral Palsy (CP) o Decompression sickness o Diabetes o Fibromyalgia o Necrotizing soft tissue infections o Migraine o Rheumatoid Arthritis o Skin grafts and flaps o Strokes o Lyme Disease o SNHL