Basically, there are three types of any equilibrium: (a) Stable Equilibrium: There is stable equilibrium, when the object concerned, after having been disturbed, tends to resume its original position. Thus, in the case of a stable equilibrium, there is a tendency for the object to revert to the old position.
The modern disease theory of alcoholism states that problem drinking is sometimes caused by a disease of the brain, characterized by altered brain structure and function. The American Medical Association (AMA) declared that alcoholism was an illness in 1956.
Q: Can alcoholism cause mental illness? A: Patients with alcoholism very often have anxiety and depression, sometimes even psychotic symptoms. It is very hard to know if these other illnesses lead to alcoholism or if the physical and social consequences of alcoholism lead to other psychiatric symptoms.