A nurse is preparing to administer memantine to a client. What medical diagnosis will the nurse expect the client to have?

A. Parkinson's disease: Treatment for Parkinson’s disease often involves dopaminergic medications such as levodopa/carbidopa or dopamine agonists. Memantine is not indicated for this condition. B. Alzheimer’s disease: Memantine is an NMDA receptor antagonist prescribed for moderate to severe Alzheimer’s disease. It works by regulating glutamate activity in the brain, helping slow cognitive decline and preserve function. C. Migraines: Migraine management typically involves triptans, beta-blockers, antiepileptic drugs, or NSAIDs. Memantine is not used in the prevention or treatment of migraine headaches. D. Seizures: Although some antiepileptic drugs act on glutamate pathways, memantine is not used in seizure control. Its primary use remains in managing Alzheimer’s-related dementia.