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Causalgia
Causalgia comes from the Greek word "kausis" meaning "burning," and the Greek word "algos" meaning "pain." Put the two words together and you get "burning pain."
Persistent and extreme burning sensations, usually in an arm or leg, accompanied by redness. These sensations usually occur after partial injury to the brachial plexus (a major nerve in the spine that goes to the arms) or a peripheral sensory nerve (a nerve in the body outside of the brain or spinal cord that provides sensation). The peripheral sensory nerves typically involved in causalgia are the median nerve (which goes to the forearm) or the tibial nerve (which goes to the leg and foot). The partial injury to the previously mentioned nerves causes the nerve supply to be interrupted.
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