Perceived versus Objective Cultural Distance: Differential Effects on Acculturation Experiences.

Bipolar I disorder is a chronic psychiatric illness characterized by recurrent episodes of mania and depression that frequently require long-term pharmacologic treatment to prevent relapse and reduce morbidity []. Lithium remains one of the most effective maintenance therapies for bipolar I disorder and has consistently demonstrated efficacy in reducing mood episode recurrence while also lowering suicide risk [,]. Despite its long history of clinical use, lithium presents unique management challenges because of its narrow therapeutic index and susceptibility to clinically significant drug-drug interactions [,,]. The therapeutic serum lithium concentration for maintenance therapy generally ranges from approximately 0.6 to 1.2 mmol/L. Concentrations exceeding this range substantially increase the risk of toxicity, although clinical manifestations correlate imperfectly with serum levels [,]. Lithium is almost exclusively eliminated through renal excretion, making serum concentrations highly dependent upon renal function, sodium balance, hydration status, and concomitant medications that alter renal lithium clearance [,,]. Consequently, relatively modest physiologic changes or medication adjustments may result in clinically significant increases in serum lithium concentrations. Lithium toxicity commonly presents with neurologic manifestations including confusion, lethargy, tremor, ataxia, dysarthria, myoclonus, gait instability, hyperreflexia, altered mental status, and, in severe cases, seizures or coma [,]. Because these symptoms are often nonspecific, prompt recognition requires careful clinical assessment, thorough medication reconciliation, and measurement of serum lithium concentrations.