An client admitted to your emergency department (ED) is experiencing hallucinations. The friend who brought him to the ED indicates that the client has used recreational drugs in the past but has not done so for many weeks. Which of the following drugs can trigger recurrent hallucinations?
Lysergic acid diethylamide (LSD)

Explanation:
LSD is a potent hallucinogenic that alters sensory perceptions and thought processes. Adverse reactions include "flashbacks," which are characterized by psychological effects and hallucinations that may recur days, weeks, or months after the drug is taken.

Lysergic acid diethylamide (LSD)

Explanation:

Lysergic acid diethylamide (LSD) is an hallucinogenic drug which is chemically synthesized from substance found in eye's fungi. This chemical belongs a member of the drug group known as psychedelics which causes hallucinations, and psychological effects such as anxiety, paranoia, and delusions. Mild change in mood and perception also accompanies the intake of this drug.

From the question, the recreational drugs take by this client contains Lysergic acid diethylamide (LSD) which made him experience hallucinations

Lysergic acid diethylamide LSD

Explanation:

Lysergic acid diethylamide (LSD) is a drug that causes altered senses and hallucinations. LSD is a know hallucinogenic drug with effects including altered thinking flow, distorted feelings and awareness of one's surroundings. The drug combines natural and man made substances. First initially synthesize for treating respiratory depression. The drugs has a delayed effect sometimes where the user may start having hallucinations and other psychological effects like the altered senses days, weeks or months after ingesting the drugs. Hence the reason why even though the client hadn't used drugs recently, he's still having hallucinations