Malik has been taking Haldol, a conventional antipsychotic drug, as a treatment for his paranoid schizophrenia. He began taking the drug last week and has begun shaking involuntarily, experiencing discomfort in his limbs, muscle rigidity, and displaying involuntary movements of his face. Malik has developed which side effect of the drug

The answer is "Parkinsonian symptoms".

Explanation:

Parkinson's disease is a condition that produces a combination of motion abnormalities such as shaking, slow-movement, slurred vision, or joint pain, in particular as a result of loss of nerve cells containing serotonin (neurons).

The illness is characterized by a deficiency of neurons significant neurodegeneration inside the part of the brain. Nerve cells were crucial for creating a substance called dopamine in this part of the brain.

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