Lidocaine is a local anesthetic (numbing medication). It works by blocking nerve signals in your body. Lidocaine topical (for use on the skin) is used to reduce pain or discomfort caused by skin irritations such as sunburn, insect bites, poison ivy, poison oak, poison sumac, and minor cuts, scratches, hemorrhoids, and burns. Lidocaine topical may also be used for purposes not listed in this medication guide.
Lidoderm is an anesthetic that works by blocking nerve signals. Lidoderm is commonly prescribed for post-shingles pain, but is also used to reduce pain or discomfort from other skin afflictions.