It’s a very broad concept but will try and simplify it. Addiction can be categorised under chemical (or drug addiction) and behavioural addiction. This divide somewhat explains that behavioural element is essential for turning an infrequent habitual behaviour into compulsive/dependent one, and that particular chemical property is required for physiological withdrawal state. In behavioural addiction there can be withdrawal state but with prominent psychological component.
Common forms of drug addiction (especially in India) include alcohol and tobacco (cigarettes and gutka). Addiction to opium, stimulant drugs (like cocaine and amphetamines), glue and gum sniffing is less common but on the rise. Abuse of cannabis (weed, ganja, hash) is commoner than thought. Perhaps there is underestimation of the misuse of prescribed, and illegally available anti-anxiety and hypnotic medication (such as Anxit, Valium, Librium – containing Alprazolam, Diazepam, and Chlordiazepoxide, and sleeping pills – Zolpidem, Zopiclone).
Behavioural addiction is a growing epidemic. So far, diagnostic manuals (DSM-IV and ICD 10) have only recognised sexual disorders under the category of impulse control disorders and disorder of adult personality and behaviour such a pathological gambling and betting. This section includes a behavioural pattern of clinical significance, which tends to be persistent and appear to be the expression of the individual’s particular lifestyle and mode of relating to himself or herself and others.
With increasing recognition of other behavioural disorders, categorised by compulsions or repetitive, compulsive behaviour that are not substance
(or drug)-related, subtypes such as Internet addiction is likely to be included in an upcoming version of DSM-V (Diagnostic and Statistical Manual,
Version 5). This category includes addiction to chat rooms, online multiplayer gaming and gambling, compulsive surfing and online shopping and cyber
sex and cyber pornography and social networking sites. Other types include sexual addiction, and addiction to video games, food, sex, work and television.