What is spasticity?

Spasticity refers to a condition characterized by increased muscle tone or contractions of the muscles. This occurs when there is an abnormality in the signals between the brain and the muscles, often seen in conditions such as cerebral palsy, multiple sclerosis, or after a stroke. As a result, the muscles become stiff or tight, which can inhibit movement and coordination.

In contrast, increased muscle relaxation, decreased muscle tone, and muscle atrophy represent different muscle conditions that do not capture the essence of spasticity. Increased muscle relaxation refers to a decrease in muscle tension, while decreased muscle tone indicates a reduced state of readiness for contraction. Muscle atrophy pertains to a reduction in muscle mass or size, which is also distinct from the increased tone associated with spasticity. Understanding these differences helps clarify the unique nature of spasticity in various medical contexts.