<s>[INST] My Father, age 74, is suffering from neurological disorder. He Lost all his interest, Lost his social behaviours and some time get violent. MRI report shows whole brain is shrinking and getting dried, but there so no such particular damage to frontal lobe. MRI Report does not say its Dementia, but symptoms are like dementia. And one more point, He get violent and restless ina particular cycle. like after 2/3 days, and in betweena cycle he is as normal as any one. Expert says he is suffering from epiliptic seizures (By reviewing the EEG. What is the best medicine and best dose? [/INST] HelloWelcome to Chat Doctor He is 74 and is showing symptoms of dementia. MR scan is showing the decreased volume of brain. He symptoms are loss of interest, loss of social behavior, violent behavior etc. Even his frontal lobe is normal. His violent behavior occurs in episodic pattern. As your doctor is suspecting any epileptic discharge on basis of EEG, it may be any epilepsy. Impulsive violent behavior is common in certain epileptics. Other possibility is some mood disorder. Loss of interest, poor social interaction, violent behavior may be due to depressive episode.  Third possibility is dementia. In dementia the changes on brain are non-specific. In last stages decreased volume of Brian may be observed. Many medicines like Donepezil, Semantic can control his dementia features. Other medicines like sodium valproate, risperidone can be given to control his aggressive behavior. I would recommend you to visit a Psychiatrist for proper evaluation. Thanks </s>