Which condition is a potentially life-threatening extrapyramidal syndrome characterized by rigidity, hyperthermia, and altered mental status?

Which condition is a potentially life-threatening extrapyramidal syndrome characterized by rigidity, hyperthermia, and altered mental status?

• A. Neuroleptic Malignant Syndrome
• B. Serotonin Syndrome
• C. Malignant Hypertension
• D. Guillain-Barré Syndrome

Answer: (A)

Recognizing a dangerous extrapyramidal reaction caused by dopamine blockade from antipsychotic drugs. This scenario points to Neuroleptic Malignant Syndrome, which presents with severe muscle rigidity (often lead-pipe rigidity), very high fever, and altered mental status, along with autonomic instability and rising CK from muscle breakdown. It demands immediate action: stop the offending antipsychotic, provide aggressive cooling and supportive care, ensure hydration, and consider medications like dantrolene or bromocriptine to help reverse the rigidity and hyperthermia. Serotonin syndrome can also have hyperthermia and altered mental status but typically shows neuromuscular hyperactivity such as clonus and hyperreflexia and is linked to serotonergic drugs. Malignant hypertension is a blood pressure emergency without the distinctive extrapyramidal rigidity. Guillain-Barré presents with ascending weakness and areflexia rather than the rigid, hyperthermic, mentally altered state described here.

Recognizing a dangerous extrapyramidal reaction caused by dopamine blockade from antipsychotic drugs. This scenario points to Neuroleptic Malignant Syndrome, which presents with severe muscle rigidity (often lead-pipe rigidity), very high fever, and altered mental status, along with autonomic instability and rising CK from muscle breakdown. It demands immediate action: stop the offending antipsychotic, provide aggressive cooling and supportive care, ensure hydration, and consider medications like dantrolene or bromocriptine to help reverse the rigidity and hyperthermia. Serotonin syndrome can also have hyperthermia and altered mental status but typically shows neuromuscular hyperactivity such as clonus and hyperreflexia and is linked to serotonergic drugs. Malignant hypertension is a blood pressure emergency without the distinctive extrapyramidal rigidity. Guillain-Barré presents with ascending weakness and areflexia rather than the rigid, hyperthermic, mentally altered state described here.