Chronic lithium toxicity may present with which neurologic symptoms?

Chronic lithium toxicity may present with which neurologic symptoms?

• A. Neurologic symptoms like ataxia, confusion, and tremors
• B. Nausea and vomiting only
• C. Skin rash
• D. Hypertension

Answer: (A)

Chronic lithium toxicity mainly shows neurologic effects because lithium accumulation in the central nervous system disrupts neuronal signaling. The hallmark signs are ataxia, tremors, and confusion, reflecting cerebellar and cortical involvement as levels rise with long-term use. Tremors are a common early feature, and confusion indicates more pronounced CNS toxicity. Nausea and vomiting can occur, but they’re not the defining features of chronic toxicity; skin rash and hypertension are not typical neurologic manifestations of lithium toxicity. If toxicity is suspected, check lithium level and renal function, assess hydration, and adjust therapy as directed.

Chronic lithium toxicity mainly shows neurologic effects because lithium accumulation in the central nervous system disrupts neuronal signaling. The hallmark signs are ataxia, tremors, and confusion, reflecting cerebellar and cortical involvement as levels rise with long-term use. Tremors are a common early feature, and confusion indicates more pronounced CNS toxicity.

Nausea and vomiting can occur, but they’re not the defining features of chronic toxicity; skin rash and hypertension are not typical neurologic manifestations of lithium toxicity. If toxicity is suspected, check lithium level and renal function, assess hydration, and adjust therapy as directed.