HBOT is very helpful AUTISM & amp; C.P. treatment of child few month age to around 15 years age. We have seen significant improvement in such child even at 18 years age. National Hyperbaric Research Centre at Vidyadhar Nagar Jaipur and at Fortis Hospital has treated many patient in last 5 years with good results. Hyperbaric Oxygen Therapy is also useful in Gangrene , Sudden Neurological hearing Loss ( FDA USA recognised ) , Ulcer , wounds and Post Radiotherapy effects .