Talk to Pediatrician on Cerebral Palsy

My Son was born premature (during 7th month) in 2014. Her mother died in an accident after a few months. we could not detect any abnormality in my son at that time. But after 6 months it was felt that he is not responding in an normal way. Due to accident shock and some other domestic causes, I was unable to take proper care of my son. After a passage of 1 year he was diagnosed that his brain cells were damaged due to oxygen deficiency and there is no proper coordination between his brain and rest of the body. It was considered that he is suffering from Cerebral Plasy. He waives his hands, and legs, but cannot do any thing on his own. We got him treated in Hameed latif hospital, then Children Hospital Lahore, then his Physio Therapy was carried in DHQ Toba tek Sing. he became a much stable. but since we have migrated to Islamabad, due to my job, he is not stable. Whenever he is sick or has Soares in mouth, or constipation or any irritation, he starts beating up his own mouth, and got hurt his face a lot. I want his proper treatment. please