Novocain, also known as procaine, is a local anesthetic that causes nerve cells to be unable to communicate with one another, thus producing a numbing sensation, according to the University of California Santa Barbara. B... More »

A facet block injection is an injection of steroid medication and/or a numbing anesthetic into the facet joints located between sections of the spinal vertebrae. Patients suffering from back injuries or arthritis utilize... More »

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Also referred to as procaine, Novocain is a local anesthetic that is injected into an area during surgery and other procedures to cause numbness of the surrounding tissues, according to Drugs.com. Exercising caution is n... More »

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According to Drugs.com, Novocain lasts for an average of 1 to 1.5 hours. The drug has a rapid onset of action, typically 2 to 5 minutes. More »

Epidurals help relieve and manage pain by inserting steroid and numbing medications into the epidural space, which is the area surrounding the fluid-filled sac that envelops the spine, according to Medline Plus. This red... More »

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A Lidoderm patch is a topical anesthetic that works by stopping nerves from transmitting pain signals to the brain, according to Drugs.com. This medication relieves pain associated with herpes zoster, also known as shing... More »

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Grass causes human skin to itch because it is stiff and has saw-like edges that cause small cuts, according to the University of California, Santa Barbara. Tiny hairs on the grass can also cause itching. More »

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