Addiction of alcohol or dependence of alcohol is a disease. Human body have a natural system that helps in situation of stress to calm it down, by consuming large amount of alcohol disturbs this system. When a person consumes alcohol on regular basis, his body’s natural system cannot help body itself. So the person needs to drink alcohol to remain “normal”. They face many symptoms when they don’t drink alcohol, because of the reason that their body is unable to calm down itself. For keeping their bodies normal and feeling better they need to drink more alcohol.