• Which different groups of hallucinogenic drugs are known?

-PCP and LSD

• Name a few typical effects of the hallucinogenic drugs and discuss the clinical profile of a patient who had taken them.

- Alter consciousness such that the individual senses things that are not present. They induce, often in an unpredictable way, perceptual symptoms, including shape and colour distortion

- depersonalization, hallucinations, distorted time perception

- They also produce somatic symptoms dizziness, nausea, paresthesias, and blurred vision.

- Flashbacks

• How is an over-dose of LSD dealt with?

• Benzodiazepine for convulsions and agitation
• Supportive care and rehabilitation

• How is an over-dose of anticholinergic drugs dealt with?

• Physostigmine