Marcus Herring

Black male Multiple Sclerosis Damaged nerves prevent sensory information from reaching the relevant area of the brain. The brain thus thinks that this area of the body is numb. However, many of these same pathways are also made hypersensitive so that the nerve itself can fire off impulses and start the pain impulse to the brain from the area of damage. The result is that the brain perceives pain from an area that it also perceives to be numb - known as anaesthesia dolorosa. In addition, hypersensitive nerves can mean that normally nonpainful stimuli (such as lightly brushing the skin) can be t perceived as severe pain - called allodynia. • 36 • View insights Boost