Welcome to health care magic,
I can certainly understand your concern and worry about your mother's suffering and can definitely say that your father's behavior could be due to alcohol with the help of the details provided by you. I can diagnose it as alcohol induced psychosis ,so that I can suggest that your father has to be treated as soon as possible because already would have been dependent that he might have certain symptoms like he couldn't sleep if you doesn't take alcohol, he would have some tremors ,palpitation
, sweating in the absence of the substance so it's better to act immediately. consult your psychiatrist
get him detoxified from the substance, if he is suffering from above withdrawal symptoms
then his behaviour can be automatically controlled and he can quit alcohol easily.
must be started with drugs like chlordiazepoxide
and some multivitamin
injections like optineuron because as thiamine ie vitamin B1 is deficient in alcohol dependent people due to decreased absorption of food and which may have irreverible adverse effects on the brain.
If he doesn't have any of the above withdrawal symptoms , his behavior can be treated with antipsychotics like Risperidone
effectively . Being a psychiatrist, I can assure you that his condition can be definitely cured and his behavior gets improved if you take necessary action soon. So nothing to worry , it would definitely help to improve your family dynamics .hope this information would help you. please post your further questions if any, I will always be available to answer them