<s>[INST] Hi. My brother is diagnosed with PDD-NOS he is 15 years old and has an aracnoid cyst in left temporal lobe. He developed typical absence seizures last year and was prescribed trioptal 300mg twice a day. Its been 10 months since he is taking medication . He has one or two seizures after taking medication otherwise no reports of it. When shall we discontinue the drug? Or is it goin to be with him forever? Thanks [/INST] Hi, your brother has arachnoid cyst L) temporal lobe. Arachnoid cysts are cerebrospinal fluid covered by arachnoid cells and collagen that may develop between the surface of the brain and the cranial base or on the arachnoid membrane, one of the three membranes that cover the brain and the spinal cord. Arachnoid cysts are a congenital disorderYour brother has to continue tripodal. Dose of Chat Doctor. Maximum dose is 40 mg/kg body weight. If seizure occur with maximum dose then second antiepileptic  </s>