Which medication class is commonly used as a first-line pharmacologic therapy for restless legs syndrome?

Which medication class is commonly used as a first-line pharmacologic therapy for restless legs syndrome?

• A. Iron supplements
• B. Benzodiazepines
• C. Dopamine agonists
• D. Anticonvulsants

Answer: (C)

Restless legs syndrome is driven by reduced dopaminergic signaling in the central nervous system, and symptoms tend to worsen with inactivity and at night. Because dopamine helps modulate movement and sensation, boosting dopaminergic activity with agents that stimulate dopamine receptors can substantially reduce the urge to move and the uncomfortable sensations, especially during the evening and at night. Dopamine agonists, used at low doses, directly provide this stimulation and have become a first-line pharmacologic approach for moderate to severe symptoms, often improving sleep and daytime functioning. It’s important to start with a small dose and titrate carefully to minimize risks of augmentation, where symptoms worsen or appear earlier in the day with prolonged use. If ferritin is low, iron repletion is helpful since iron deficiency can worsen RLS, but iron therapy is not a dopamine-targeting class. When symptoms are milder or augmentation risk is a concern, alternative options such as gabapentinoids may be considered.

Restless legs syndrome is driven by reduced dopaminergic signaling in the central nervous system, and symptoms tend to worsen with inactivity and at night. Because dopamine helps modulate movement and sensation, boosting dopaminergic activity with agents that stimulate dopamine receptors can substantially reduce the urge to move and the uncomfortable sensations, especially during the evening and at night. Dopamine agonists, used at low doses, directly provide this stimulation and have become a first-line pharmacologic approach for moderate to severe symptoms, often improving sleep and daytime functioning. It’s important to start with a small dose and titrate carefully to minimize risks of augmentation, where symptoms worsen or appear earlier in the day with prolonged use. If ferritin is low, iron repletion is helpful since iron deficiency can worsen RLS, but iron therapy is not a dopamine-targeting class. When symptoms are milder or augmentation risk is a concern, alternative options such as gabapentinoids may be considered.