Geriatric Depression Presenting as Pseudoparkinsonism: A Levodopa-Responsive Case With 3-Year Follow-Up

A woman in her 60s with recurrent depression developed severe psychomotor retardation mimicking Parkinson's disease, including tremor and rigidity unresponsive to standard antidepressants. Levodopa produced marked improvement in both motor and depressive symptoms, while a normal dopamine transporter scan ruled out neurodegeneration, confirming the diagnosis of geriatric depression with pseudoparkinsonism.