Spastic Dystonia or hypertonicity is the inability to relax a muscle leading to a spontaneous tonic contraction. [1] Spastic dystonia is most noticeable in humans in the upper limb, where it …

Dec 6, 2025 · A hypertonic muscle represents an abnormally increased resting tension, or tone, in a muscle group, distinguishing it from simple muscle tightness or soreness. Muscle tone is the …

Jun 26, 2025 · Hypertonic muscles are abnormally increased in muscle tone, causing stiffness and reduced range of motion. Learn about the causes, symptoms, and effective treatment …

Spastic hypertonia involves uncontrollable muscle spasms, stiffening or straightening out of muscles, shock-like contractions of all or part of a group of muscles, and abnormal muscle …

Jul 22, 2024 · When one muscle is hypertonic, it usually means there is a weaker muscle that does the opposite action (these are called “agonist” muscles).

Jun 3, 2020 · All muscles have a normal resting tone, which helps the body move freely against gravity and is needed for overall posture. In the case of muscular hypertonicity (hypertonia, …

Hypertonia represents a state where the muscles are in a continuous, involuntary, and excessive state of contraction, resulting in a persistent stiffness. This condition is the opposite of …

Hypertonia describes abnormally increased muscle tone caused by upper motor neuron pathology in the brain or spinal cord. Clinically, hypertonia can manifest in either spasticity, dystonia, …

Mar 26, 2025 · Muscle hypertonicity is a condition of increased muscle tension. Understand the causes, effects, and management strategies to reduce muscle stiffness and improve mobility.

Hypertonia is a condition in which there is too much muscle tone so that arms or legs, for example, are stiff and difficult to move. Muscle tone is regulated by signals that travel from the …