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A member asked:
How do topical medications work? like pain-relieving patches and creams?
A doctor has provided 1 answer
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 6/26/2014
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