These are alcohol withdrawal symptoms. After a long and continue use of alcohol, when it is stopped suddenly, it may show such type of symptoms like hellucinations [false perception(s) where objects are not present], sleeplessness, restlessness, weakness, perspiration, Gastro-intestinal disturbances with high BP, disturbed suger and/or electrolyte level. Along with these, some symptoms are like uncontrolled violent behaviour which patient has not known or understood about that.