He’s 24 - moved home last summer. Graduated 2 years ago and stayed in uni city after. Trying to establish a freelance creative career. He has his old school friends a pocket money job in a local pub and does loads of sport (solitary stuff - running / climbing). He doesn’t smoke, drink or do any drugs now. He is passive aggressive and hostile in the home. Doesn’t speak just a dark moody cloud - but chipper to his colleagues and friends. He makes his younger sisters walk on eggshells. He has this thing recently where when he is told to do something (reasonable house related) he descends into this whooping crying fit. I walk away as I see it as manipulative and he then rings his Dad at work screaming at him that I am mocking him and bullying him - which is not true - I will have said for instance do not use the jack and Jill shower at 2am use the main bathroom as it wakes your sister who has to go to school.
He screams that I am mocking his mental health by asking him to be considerate to others.
Is he being manipulative or is something deteriorating with him? Could he have something undiagnosed MH / ND that would cause this volatility and rage. My DD is scared of him physically although he has never been violent.