A client with Raynaud's disease asks about using biofeedback. Which statement about biofeedback is accurate?

• A. Biofeedback has no role in Raynaud's
• B. Biofeedback causes peripheral vasoconstriction
• C. Biofeedback allows the client to control involuntary responses to promote peripheral vasodilation
• D. Biofeedback reduces heart rate only

Answer: (C)

The main idea here is that biofeedback helps a person influence automatic body responses to improve blood flow to the extremities in Raynaud’s disease. Raynaud’s causes episodes of vasospasm in fingers or toes when exposed to cold or stress, leading to reduced blood flow, numbness, and color changes. Biofeedback provides real-time information about physiological processes such as skin temperature and heart rate, and teaches techniques—like relaxation, controlled breathing, and gradual warming—that shift the autonomic nervous system toward relaxation and vasodilation. With practice, the client can learn to trigger these responses before or during a vasospastic attack, promoting better peripheral circulation. So the accurate statement is that biofeedback enables the person to control involuntary responses to promote peripheral vasodilation.

Biofeedback does have a role in Raynaud’s, and it isn’t about causing vasoconstriction. While it can help with heart rate and other metrics, its primary benefit here is enhancing peripheral blood flow through autonomic regulation, not reducing heart rate alone.