The difference between low paraplegia and high paraplegia lies in the level of spinal cord lesion and its manifestation.
Paraplegia is a spinal cord injury that results in loss of sensory, motor, and reflex functions in the trunk and limbs below the level of the spinal cord. There is no strict, standardized definition of paraplegia or paraparesis.
In paraplegia, the spinal cord lesion is located relatively low and may be characterized by paralysis of both lower limbs. There is motor dysfunction in both lower limbs, and sensation and reflexes are absent. Anal sphincter dysfunction, bladder dysfunction, and incontinence may also be present.
Paraplegia is a relatively high spinal cord lesion, usually above the level of the 2nd thoracic medulla oblongata, which may result in loss of movement and sensation (pain, touch, temperature, etc.) in the limbs and trunk, as well as restricted respiratory and diaphragmatic muscles, dyspnea, and complete loss of bladder and anal sphincter function.
Generally speaking, paraplegia is more likely to have a serious condition as the spinal cord injury is in a higher position compared to paraplegia. If there is any discomfort, it is recommended to seek prompt medical attention and standardized treatment.