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Cannabis is formed from the dried flowering tops of hemp plants which have euphoric properties. It is classified as a hallucinogen. Cannabis is very widely grown and available, and is usually smoked with or without tobacco. It is obtained as dried leaves or as a resin. It induces feelings of well-being, relaxation and tranquility, though it may also give rise to apprehension, anger and depression. It is usually used socially
- how can cannabis be consumed? Is cannabis smoke potentially carcinogenic?
- the area of cannabis and development of psychiatric illness is controversial. What is the evidence base regarding psychiatric illness and cannabis use?
- how does cannabis affect motor skills?
- how does cannabis use affect the risk of coronary heart disease?
More information then consult Cannabis section on GPN
Nearly one-fifth of patients treated in general medical practices report drinking alcohol at levels considered "risky" or "hazardous" and may be at risk for developing alcohol-related problems as a result. Excess alcohol use plays a significant part in the epidemiology of health and social problems and is responsible for significant morbidity (1)
Excess alcohol consumption has been implicated in:
A tool used to assess alcohol consumption is the CAGE questionnaire. What is the CAGE questionnaire?
When assessing a person's alcohol consumption, what is the equivalent of one unit of alcohol?
Chronic alcohol consumption can be associated with a confusional state due to acute intoxication. What other causes should be considered?
What is Korsakoff's psychosis?
Regarding pharmacological treatment of alcohol withdrawal:
More information concerning the alcohol knowledge base see alcohol problem drinking section on GPN
Cocaine was obtained by South American Indians from the leaves of the coca shrub. It was popularised in late nineteenth century middle-class Europe. It is illegally imported from S. America as a white powder and is colloquially refered to as coke or snow. Cocaine is usually sniffed or snorted from a spoon or tube, and absorbed via the nasal mucosa. The stimulant effects wane after 20-30 minutes.
What is crack cocaine?
What are the complications of cocaine use?
It is more potent than morphine, causes less nausea and hypotension, and its greater solubility allows effective doses to be given in smaller injected volumes - this property is useful in the emaciated patient. Its capacity to produce euphoria gives it great potential for causing dependence. Tolerance develops: an increased dose is needed to produce pleasurable effects. It is usually bought in a brownish powder, and is smoked - "chasing the dragon" - or dissolved in acid for injection
A 20 year old heroin addict has presented to the GP surgery for the first time this afternoon. What are important aspects to consider during this first consultation?
This gentleman was referred to the local community drug team and is to start on treatment with subutex.
What is subutex? GPN reference
What are the advantages for prescribing subutex rather than methadone? GPN reference
When prescribing methadone, what is equivalence of buprenorphine (subutex) to methadone?
Is methadone or buprenorphine recommended as the first-line option for opioid detoxification by NICE?
What is lofexidine?
For more details see heroin section of GPN