Poisoning is the name given to clinically significant behavioural changes and other symptoms that appear following the consumption of cannabis.
The most common cause of intoxication is the voluntary or accidental ingestion or inhalation of excessive quantities of this substance. It is of particular concern in children, when it usually follows accidental ingestion.
Symptoms range from nausea, hypotension and muscle twitches to delirium, panic and acute psychosis. In children, symptoms may become very serious, up to a coma and apnoea (pauses in breathing).
Diagnosis is reached through clinical history and physical examination. It will be confirmed with a blood test.
Treatment is symptomatic. In the case of motor agitation, it may be necessary to administer sedatives such as benzodiazepines. It is essential to prevent a secondary damage and calm patients who have panic reactions.
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