A nurse is assessing a male client who recently began taking haloperidol (Haldol). Which of the following findings is the highest priority to report to the provider?

When a patient abruptly stops taking an antipsychotic medication, the therapeutic dopamine blockade is lost, often leading to a rapid recurrence of hallucinations, delusions, and disorganized thinking. The nurse’s priority is to address and prevent relapse of psychosis to ensure safety.

Rationale for correct answer:

D. Symptoms of psychosis are likely to return.
Stopping antipsychotics abruptly can cause rapid reemergence or worsening of psychotic symptoms, greatly increasing the risk of self-harm or harm to others. Immediate intervention is vital to maintain mental stability.

Rationale for incorrect answer:

A. A hypertensive crisis may occur with such abrupt withdrawal of the drug.
Hypertensive crisis is mainly linked to monoamine oxidase inhibitors (MAOIs), not antipsychotics, so it is not the primary concern.

B. Significant muscle twitching may occur, increasing fall risk.
Muscle twitching is not a common withdrawal effect of antipsychotics and is less urgent than psychosis relapse.

C. EPS symptoms such as pseudo-parkinsonism are likely to occur.
Extrapyramidal symptoms are usually a side effect during ongoing therapy, not after discontinuation.

Take-home points:

• Abrupt cessation of antipsychotics can trigger psychotic relapse.
• The nurse’s priority is patient safety and symptom management.
• Hypertensive crisis is not associated with antipsychotic withdrawal.

Clients on antipsychotic medications are at risk for both common and life-threatening adverse effects. While many side effects are uncomfortable but manageable, the sudden onset of certain symptoms may indicate a medical emergency such as neuroleptic malignant syndrome (NMS), which requires immediate intervention to prevent serious complications or death.

Rationale for correct answer:

A. Fever, tachycardia, confusion, incontinence – These symptoms suggest neuroleptic malignant syndrome, a rare but potentially fatal reaction to antipsychotics. NMS is characterized by hyperthermia, autonomic instability, altered mental status, and severe muscle rigidity. Immediate discontinuation of the drug, rapid medical management, and supportive care are critical.

Rationale for incorrect answer:

B. Pacing, squirming, or difficulty with gait such as bradykinesia – These are signs of akathisia or drug-induced parkinsonism, which are types of extrapyramidal symptoms (EPS). While uncomfortable and requiring prompt treatment, they are not typically life-threatening emergencies.

C. Severe spasms of the muscles of the tongue, face, neck, or back – This describes acute dystonia, an early-onset EPS that can be distressing and potentially dangerous if airway muscles are involved, but it is generally managed quickly with anticholinergic medications like benztropine or diphenhydramine.

D. Sexual dysfunction or gynecomastia – These are related to endocrine side effects from increased prolactin levels. They are bothersome and may affect adherence but are not medical emergencies.

Take-home points:

• NMS is a life-threatening complication of antipsychotic therapy and must be recognized early.
• Key warning signs include hyperthermia, autonomic instability, altered mental status, and muscle rigidity.
• Immediate drug discontinuation and emergency medical care are essential for survival.