Conversation: The conversation between human and AI assistant.
[|Human|] Ive known my father in law for over 30 years. At first he was a jerk, thought it was funny to insult and belittle people, particularly his wife. For the last 8 years or so he started mellowing, being nice to people, being attentive and helpful to his wife and so on. A few weeks ago they found a tumor growing between his skull and the membrane surrounding the brain. It was on the right side of his head, about the size of a lemon. He had surgery five days ago and returned home yesterday. Now hes back being an ass again. Is this common? To revert back to a previous personality? Is it temporary?
[|AI|]  Hi there. Thanks for your quarry.i wouldn't like to attribute his strange behavior to the tumor. he's surely suffering from another psychological problem that provokes mood swings. However, going through surgery recently might have just been so stressful, so you have to do all to tolerate him. Also do well to consult a psychiatrist for proper evaluation and to rule out an organic cause. Thanks for understanding