What symptom is likely present in a patient with elevated lithium levels?

Elevated lithium levels are primarily associated with a range of neurological and gastrointestinal symptoms due to lithium's effects on the central nervous system. One of the prominent symptoms at toxicity levels is tremors or alterations in motor control, which can lead to feelings of disorientation or dizziness, thereby resulting in vertigo.

While hypotension, tachycardia, and hypertension may occur with other medications or conditions, they are not typical symptoms associated with lithium toxicity. The primary concern with lithium levels is the potential for neurological symptoms, which makes vertigo a likely manifestation in the context of elevated lithium levels. Therefore, recognizing vertigo as a symptom aligns with the understanding of lithium's pharmacological profile and the effects of toxicity.