A 30-year-old male asked:
How do topical medications work? Like pain-relieving patches and creams?
1 doctor answer
Dr. Dan Fisher answered
26 years experience in Internal Medicine
Too big a question. : There are many hundreds of different types of topical medications. They all work through unique mechanisms. Pain relieving patches such as Lidocaine effect the local nerves whereas patches such as fentanyl affect receptors in the brain.
Answered on Jun 26, 2014
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