• 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.

Effects of hallucinogenic drugs:

• Dizziness.
• Vomiting.
• Euphoria.
• Nausea.
• Weakness.
• Paraesthesia.
• Blurred vision.
• Sense of well-being and relaxation.

Clinical profile of patient who had taken them:

• Change in behaviour.
• Poor skin tone.
• Lack of energy.
• Bloodshot eyes.
• Poor performance.
• Tired and run down.

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

Intravenous administration of anticoagulants, vasodilators or sympatholytic. Supportive care and rehabilitation.

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

By administering a reversible acetylcholine inhibitor such as physostigmine salicylate.