Which symptom is commonly associated with moderate lithium toxicity?

Moderate lithium toxicity is characterized by a variety of symptoms that indicate the body is struggling to process lithium effectively. Hypotension, or low blood pressure, is a commonly observed sign in this state. High levels of lithium can affect fluid balance and renal function, potentially leading to circulatory issues, including hypotension. This symptom signals that lithium levels have surpassed the therapeutic range and that there may be serious underlying effects on bodily systems.

In contrast, increased appetite, heightened energy, and dry skin are not direct symptoms associated with moderate lithium toxicity. Increased appetite might suggest a different action or condition altogether, heightened energy could be indicative of mania or a stable mood state rather than toxicity, and dry skin, while it can arise from dehydration or other conditions, is not a hallmark of lithium toxicity specifically. The presence of hypotension serves as a warning sign that immediate intervention and monitoring may be necessary to prevent further complications.