What is pain relief patch?

A pain relief patch is a thin, adhesive patch that is applied directly to the skin to provide relief from various types of pain. The patch contains an active ingredient, such as lidocaine or capsaicin, and is worn for up to 8 hours at a time. Pain relief patches are commonly used for muscle and joint pain, back pain, and other types of chronic pain. They can be purchased over the counter or by prescription.