There are at least two billion users of alcohol worldwide, and alcohol is a major public health concern in most countries. Remembering to screen for alcohol misuse, recognizing the physical and psychological complications, and having the ability to offer basic advice and treatment are essential for all clinicians.Details
1. To enable clinicians to communicate with one another about their patients symptoms, prognosis and treatment.
2. To ensure that research can be conducted with comparable groups of patients.
3. To enable epidemiological studies as a basis for research and planning services.
Systems of classification: There are mainly two systems of classification which are described in brief below.
Barbiturate use disorder is now subsumed under sedative, hypnotic and anxiolytic use disorders. However, it has described separately as it has some distinctive features. Since their introduction in 1903, barbiturates have been used as sedatives, hypnotics, anticonvulsants, anaesthetics and tranquilisers.
In LSD use disorder, Lysergic acid diethylamide, ﬁrst synthesised by Albert Hoffman in 1938 and popularly known as ‘acid’, is a powerful hallucinogen. . It is related to the psychedelic compounds found in the ‘morning glory’ seeds, the lysergic acid amides. As little as 100 μg of LSD is sufﬁ cient to produce behavioural effects in man. LSD presumably produces its effects by an action on the 5-HT levels in brain.