Which symptom is NOT typically associated with Lithium side effects?

Lithium is a mood stabilizer commonly used to treat bipolar disorder, and it has a range of side effects that are often encountered during treatment. A symptom that is not typically associated with lithium side effects is hyperactivity. In fact, lithium is primarily used to help stabilize mood and reduce the extremes characteristic of bipolar disorder, such as mania and hyperactivity. The other symptoms, such as nausea, severe diarrhea, and metallic taste, are known side effects of lithium and can occur as the body adjusts to the medication. Nausea and a metallic taste in the mouth are common during the initial phases of treatment, and gastrointestinal disturbances like diarrhea can also happen, especially if lithium levels rise too quickly or if the medication is not taken consistently. Therefore, hyperactivity stands out as the symptom that does not align with lithium's intended therapeutic effects and is not a recognized side effect.