I respond perfectly to Lidocaine. It kills 100% of the pain for all other dental and skin procedures. However, in this one dermatologist's office, my mole removals are 100% horribly painful. The lidocaine does not work one bit! He tells me it does not work on me because I am allergic to sulfa drugs. I can find no medical literature to support this. I often hear other patients cry out when waiting for my appointment. A charming doc, but is he possibly sadistic? Is he using expired lido?
Why Doesn't The Lidocaine At This Doc's Office Work?
Doctor Answers 2
Lidocaine not working for pain
You are correct - allergies to sulfa drugs have no bearing on the effects of lidocaine. Even expiring lidocaine should be more effective than what you are describing. I think it's time for you to find another dermatologist!
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Lidocaine still a pain
It does work instantly but if you give it a little longer to diffuse (like 1-2 minutes) maybe it'll work better on you. I have a few patients for whom I just have to put a little more than normal in, and I have to wait a couple of minutes. All my other patients do fine with the procedure right away. You don't want to wait too long (like an hour) on the other hand, or you may metabolize the lidocaine if you are a fast metabolizer.