Hi, Thank you for posting your query. I have noted your son s symptoms and CT scan findings. First of all, I would like to reassure you that CT scan findings do not suggest any serious brain disease. Gliotic changes refer to an old scar due to injury or a blood clot in the past. This CT scan finding may increase the risk of seizures. Tegrital (carbamazepine) is an anti-epileptic medication, and is used to prevent seizures. If your son has had seizures, he should continue this medication. I hope my answer helps. Please get back if you have any follow up queries or if you require any additional information. Wishing you good health, Dr Sudhir Kumar MD (Internal Medicine), DM (Neurology) Senior Consultant Neurologist Apollo Hospitals, Hyderabad, India Click on this link to ask me a DIRECT QUERY: http://bit.ly/Dr-Sudhir-kumar My BLOG: http://bestneurodoctor.blogspot.in