can i ask, when you have a bout of anger, do you feel any better after it comes out?
holding all your anger in may be making it worse. finding a healthy way to release it might improve things
one thing thats worked for me in the past is to wrap something around your head, like a towel or bedsheet, then scream and loud as you can. the screaming helps get your anger out and wrapping your head muffles the noise
other people have mentioned to me that channelling there anger into sports, like boxing or martial arts, is therapeutic for them
i would also go back to the doctor and insist they nothing is working and they need to look at other options
good luck to you