Classification of Psychiatric Disorders

In psychiatry, as in the rest of the medicine, Classification of Psychiatric Disorders is needed for three main purposes:

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.

DSM IV
ICD 10
HOMEOPATHIC

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Barbiturate Use Disorder

Barbiturate:
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.

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LSD Use Disorder

LSD:
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.

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Amphetamine Use Disorder

Amphetamine Use Disorder: In Amphetamine Use Disorder, Though synthesis by Edleano in 1887, it was introduced in Medicine in 1932 as benzedrine inhaler, for the treatment of coryza, rhinitis and asthma. Later, it recommended for a variety of conditions such as narcolepsy, postencephalitic parkinsonism, obesity, depression, and even to heighten energy and capacity to work.   Amphetamine…

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Cocaine Use Disorder

Cocaine:
In Cocaine use disorder,  Cocaine is an alkaloid derive from the coca bush, Erythroxylum coca, found in Bolivia and Peru. It isolated by Albert Neimann in 1860 and was used by Karl Koller (a friend of Freud) in 1884 as the first effective local anesthetic agent.

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Cannabis Use Disorder

Cannabis:
In Cannabisuse diorder, Cannabis is derived from the hemp plant, Cannabis sativa, which has several varieties named after the region in which it is found (e.g. sativa indica in India and Pakistan, and americana in America).

Street names: Grass, Hash or Hashish, Marihuana.

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Opioid Use Disorder

Opioids:
Opioids are substances that mimic the effects of endogenous opioids (endorphins and enkephalins) by acting as agonists at the opioid receptors. [1]

In the last few decades, opioid use disorder has increased markedly all over the world. [2] The first record of opioid use by humans was in Mesopotamia in around 3400 BC, when people extracted the natural opioids from poppies and smoked them. Originally it was marketed as a less addictive form of morphine, but unfortunately this turned out to be completely wrong. Diamorphine is the mostly widely used opioid, as it produces the most powerful euphoria. [1]

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