Paralysis

Motor paralysis (paralysis of the locomotor system) is classified as peripheral or central paralysis depending on the height of the damage.
Peripheral paralysis: the nerve is diseased or damaged, either in its course after leaving the spinal cord (severed by an injury, for example) or where it originates in the spinal cord (due to polio, for example). These are always cases of flaccid paralysis. The affected muscle groups or limbs exhibit no muscle tension whatsoever.
Central paralysis: the paralysis site is higher with this type, that is, in the long nerve tracts known as the pyramidal tracts of the spinal cord (spinal paralysis) or in the brain itself (cerebral paralysis), for example, after a stroke. Central paralysis frequently becomes spastic over time, meaning the tension of the affected musculature is increased. Depending on the extent of paralysis, it can be referred to as monoplegia (paralysis of just one limb), paraplegia (paralysis of the upper or lower limbs), tetraplegia (paralysis of all limbs) or hemiplegia (paralysis of one half of the body).

Some types of paralysis are caused by a disease in the muscle itself (myogenic paralysis). Paralysis for mental reasons (psychogenic paralysis) also occurs in rare cases.