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The finger pain is probably a pinched nerve which will not repair. Pinched nerves have no relationship to memory issues, they just occur.
Many people have mood swings, so for you that may just be a matter of needing some therapy to deal with. A study of people with physical aggression issues determined that those people do not have trouble maintaining composure when they are in the presence of someone they feel physically afraid of.
You should talk to your doc or a professional for clarification about all your concerns, as people on this board can only provide background info.