What is the primary purpose of antiparkinsonian drugs?

What is the primary purpose of antiparkinsonian drugs?

• A. Reduce signs and symptoms of Parkinson disease.
• B. Treat bacterial infections.
• C. Lower blood pressure.
• D. Decrease appetite.

Answer: (A)

Antiparkinsonian drugs are used to reduce the motor signs and symptoms of Parkinson’s disease by boosting or mimicking dopamine in the brain, or by balancing other neurotransmitters affected by the disease. Parkinson’s involves loss of dopamine-producing neurons in the substantia nigra, which leads to tremor, rigidity, slowed movement, and postural instability. These medications address that imbalance to improve movement and function, but they do not cure the disease or stop neuron loss. How this is accomplished varies: L-dopa (often with carbidopa) replenishes brain dopamine; dopamine agonists directly stimulate dopamine receptors; MAO-B and COMT inhibitors slow the breakdown of dopamine to extend its action; anticholinergic drugs help tremor in some patients; and amantadine can reduce dyskinesias. The overall goal is symptom relief and improved quality of life, not a cure.

Antiparkinsonian drugs are used to reduce the motor signs and symptoms of Parkinson’s disease by boosting or mimicking dopamine in the brain, or by balancing other neurotransmitters affected by the disease. Parkinson’s involves loss of dopamine-producing neurons in the substantia nigra, which leads to tremor, rigidity, slowed movement, and postural instability. These medications address that imbalance to improve movement and function, but they do not cure the disease or stop neuron loss.

How this is accomplished varies: L-dopa (often with carbidopa) replenishes brain dopamine; dopamine agonists directly stimulate dopamine receptors; MAO-B and COMT inhibitors slow the breakdown of dopamine to extend its action; anticholinergic drugs help tremor in some patients; and amantadine can reduce dyskinesias. The overall goal is symptom relief and improved quality of life, not a cure.