Hematomyelia is a disease characterized by intraspinal hemorrhage that affects the spinal cord grey matter. It is the equivalent to a cerebral hemorrhage, but it takes place in the spinal cord and it is rare. Hematomyelia is more frequently observed in young men. Although it is usually caused by a trauma, it can also be caused by vascular alteration, such as atherosclerosis and hypertension. This medical condition begins with paresthesia (burning or prickling sensation), followed by paralysis. Depending on the affected area, there could be paralysis of the upper limb, for example.