1. ALPHA Alcoholism: This is purely psychological dependence on the effect of alcohol to relieve bodily or emotional pain. Although there are no signs of progressive process or the drinking leads to loss of control, damage from drinking can be restricted to relationship or even job performance.
2. GAMMA Alcoholism: This acquired increase tissue tolerance to an loss of control, but there is definite progression from psychological to physical dependence and see a marked behavioural changes.
3. BETA Alcoholism: This has a primary characteristic adherence to socio-cultural norms