A neuromuscular condition that demonstrates increased muscle irritability and contractility accompanied by an impaired ability of the muscle to relax.
Any disorder involving sustained, involuntary contractions of muscle.
Muscle tension; sometimes resulting in muscles contractions and spasms increases during sexual arousal.
Difficulty in relaxing a muscle after exercise.
Inability of a muscle to relax readily after use, a symptom seen in diseases such as myotonic dystrophy, a form of muscular dystrophy, and myotonia congenita.
Condition in which a muscle or group of muscles has abnormally prolonged contractions, not readily relaxing after contraction.
A type of dystonia characterized by an inability to relax a muscle.
A disorder of abnormally prolonged contractions of a muscle or group of muscles. Myotonia is a symptom of disorders such as myotonic muscular dystrophy.
A disorder of the muscle fibers that results in abnormally prolonged contractions. The patient has difficulty in relaxing a movement (e.g. his grip) after £my vigorous effort. It is a feature of a hereditary condition starting in infancy or early childhood (myotonia congenita) and of a form of muscular dystrophy (dystrophia myotonica).
A condition in which the muscles, though possessed of normal power, contract only very slowly. The stiffness disappears as the muscles are used.
Tonic spasm of a muscle or temporary rigidity after muscular contraction.
The incapacity of a muscle to unwind even after the necessity for contraction has ended is known as myotonia. This phenomenon is a characteristic of myotonic dystrophy, a type of muscular dystrophy.