2025年1月13日 · Myotonia happens when your muscles don’t relax as they should after they contract. It can impact muscles throughout your body and may cause other symptoms depending on the type of myotonia. Treatments include medication, physical therapy and avoiding triggers. What is myotonia?

2023年5月1日 · Myotonia is, by definition, the impairment of relaxation of skeletal muscles after voluntary contraction or electrical stimulation. Many etiologies result in myotonia, including dystrophic and non-dystrophic myotonias.

Myotonia is a symptom of a small handful of certain neuromuscular disorders characterized by delayed relaxation (prolonged contraction) of the skeletal muscles after voluntary contraction or electrical stimulation, and the muscle shows an abnormal EMG.

2022年12月12日 · Myotonic dystrophy (DM) is an inherited multisystem condition that mainly causes progressive muscle loss, weakness and myotonia. It can also affect other parts of your body, including your heart, lungs and eyes.

2023年8月28日 · Myotonia, defined as a delay or failure of relaxation in contracted skeletal muscle, is considered to be the hallmark of the disease and results in prolonged rigidity resulting in stiffness, cramping, and muscle hypertrophy.

2025年1月14日 · Myotonia congenita is a rare genetic condition that causes myotonia. This prevents your muscles from relaxing properly after they contract. For example, your child might not be able to let go of a toy right away after they grasp it. Myotonia congenita begins in childhood or adolescence.

Myotonic dystrophy (DM) is a form of muscular dystrophy that affects muscles and many other organs in the body. The word “myotonic” is the adjectival form of the word “myotonia,” defined as an inability to relax muscles at will. The term “muscular dystrophy” means progressive muscle degeneration, with weakness and shrinkage of the muscle tissue.

The nondystrophic myotonias are rare muscle hyperexcitability disorders caused by gain-of-function mutations in the SCN4A gene or loss-of-function mutations in the CLCN1 gene. Clinically, they are characterized by myotonia, defined as delayed muscle ...

2024年7月19日 · Myotonia congenita is an inherited neuromuscular disorder characterized by the inability of muscles to quickly relax after a voluntary contraction. The condition is present from early childhood, but symptoms can be mild.

Myotonia, any of several muscular disorders characterized by difficulty in relaxing voluntary muscles after contraction. All the muscles or only a few may be affected. These disorders are often inherited.