Which statement about antiparkinsonian drugs is accurate?

Which statement about antiparkinsonian drugs is accurate?

• A. They primarily treat hypertension.
• B. They are used to treat anxiety.
• C. They have no side effects.
• D. They help reduce signs and symptoms of Parkinson disease.

Answer: (D)

Antiparkinsonian drugs work by increasing or mimicking dopamine in the brain, or by adjusting related neurotransmitter activity, to rebalance the brain circuits that are disrupted in Parkinson disease. This modulation directly targets the motor symptoms, helping to reduce the signs and symptoms such as slowness, stiffness, and tremor. They are not intended to treat conditions like hypertension or anxiety, and they do have side effects, including nausea, dizziness or hypotension, and sometimes involuntary movements or cognitive changes. They do not cure Parkinson disease; they aim to improve daily function by managing symptoms.

Antiparkinsonian drugs work by increasing or mimicking dopamine in the brain, or by adjusting related neurotransmitter activity, to rebalance the brain circuits that are disrupted in Parkinson disease. This modulation directly targets the motor symptoms, helping to reduce the signs and symptoms such as slowness, stiffness, and tremor. They are not intended to treat conditions like hypertension or anxiety, and they do have side effects, including nausea, dizziness or hypotension, and sometimes involuntary movements or cognitive changes. They do not cure Parkinson disease; they aim to improve daily function by managing symptoms.