toms people experiences after abstaining from consuming alcohol? how do changes in the functioning of neurotransmitter systems produce these symptoms?...

what is the psychological term for the symptoms people experiences after abstaining from consuming alcohol? how do changes in the functioning of neurotransmitter systems produce these symptoms?
with reference to associative learning model why does people consume alcohol alleviate the symptoms of headaches, unease and strong cravings for alcohol. sometime people not enjoy drinking but they still need to keep drinking?
what are the factors that prevents people from quit drinking, and lead to a cycle of relapse? why are these processes important for our understanding of addiction and substance use disorders?