hello
@Lamia
a warm welcome from me too
it is unusual for someone so young to have a diagnosis of Alzheimer's but it is possible ... however, I wonder what he means by Alzheimer's attacks, explaining behaviour that way is unusual
any form of aggression and violence is not acceptable, is there somewhere you can go to be safe and later tell your partner to see his GP to look into meds to help him
in fact, I'd contact his GP and give him the details you have shared here as his GP will know whether or not there has been a diagnosis and will have to note the info you give on his records, though they won't be able to discuss this with you due to patient confidentiality ... ask the GP not to mention that you have contacted them, so this isn't passed on to your partner
please call the police if there's any aggression towards you, you have a right to be safe ... I appreciate this may be hard to do, but it may be a way for your partner to get the support he needs ... you can also make your Local Authority Adult Services aware as they have a duty of care
you've reached out here, might you also look at this site for support
What is domestic abuse? - Womens Aid
sorry if this is untoward ... personally, this is sounds like the kind of relationship to walk away from, though I understand things aren't always that simple ... you matter, your safety matters and you have a right to live life without fear of such behaviour