Researchers have now seen in a study patients with post-shingles pain that capsaicin acts on pain-responsive pain fibers. In the study, participants were treated with the capsaicin patch showed 33 ...

Some over-the-counter (OTC) topical creams, like lidocaine ... neuralgia (a complication of shingles). There’s also little evidence that capsaicin may benefit people with HIV neuropathy and ...