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What is Central pain syndrome and explain in detail?
Central pain syndrome is a neurological condition consisting of constant, moderate to severe pain due to damage to the central nervous system (CNS) which causes a sensitization of the pain system. The extent of pain and the areas affected are related to the cause of the injury.

Signs and symptoms
Pain can either be relegated to a specific part of the body or spread to the entire body. It is typically constant, and may be moderate to severe in intensity.  Those who are afflicted describe it as being stuck in a loop of pain. It is often made worse by touch, movement, emotions, barometric pressure and temperature changes, usually cold temperatures along with many other similar triggers. Cold temperatures regularly make the burning pain worse in certain body parts. Burning pain is the most common sensation, but patients also report pins and needles, pressing, lacerating, aching, and extreme bursts or constant sharp or unremitting excruciating pain. Individuals may have reduced sensitivity to touch in the areas affected by the pain, as if the part is falling asleep. The burning and loss of sense of touch are usually, but not always, most severe on the distant parts of the body, such as the feet or hands, spreading until it is in some cases felt from head to toe. Usually the burning pain in body parts is a result of old injuries that seem like they should have healed long ago, yet the pain lingers on and even years afterwards