Isaacs-Mertens syndrome
neuromyotonia , NMT (Abkürzung)

This disorder is also known as episodic ataxia with myokymia (EAM), hereditary paroxysmal ataxia with neuromyotonia and Isaacs-Mertens syndrome.

There is no known cure for neuromyotonia, but the condition is treatable.

Myokymia in otherwise unrelated body parts may occur in neuromyotonia.

Patients with CFS, like those with neuromyotonia, may also experience paresthesias.

Myokymia, or spontaneous rippling and twitching movements of muscles, is a visible component of neuromyotonia.

Some neuromyotonia cases do not only improve after plasma exchange but they may also have antibodies in their serum samples against voltage-gated potassium channels.

Neuromyotonia (Isaacs)

Anticonvulsants, including phenytoin and carbamazepine, usually provide significant relief from the stiffness, muscle spasms, and pain associated with neuromyotonia.

Autoimmune neuromyotonia is typically caused by antibodies that bind to potassium channels on the motor nerve resulting in continuous/hyper-excitability.

The principal autoimmune diseases studied are myasthenia gravis, the Lambert-Eaton myasthenic syndrome and acquired neuromyotonia.

Neuromyotonia (NMT), otherwise known as Isaac's syndrome, is unlike many other diseases present at the neuromuscular junction.

Neuromyotonia (Isaac's Syndrome)

He ran a clinic for neurological paraneoplastic syndromes, myasthenia gravis, neuromyotonia, Lambert-Eaton myasthenic syndrome, and autoimmune encephalitis.

Laryngeal spasm possibly resulting from neuromyotonia has been described previously, and this highlights that, in patients with unexplained laryngospasm, neuromytonia should be added to the list of differential diagnoses.

It is speculated that the plasma exchange causes an interference with the function of the voltage-dependent potassium channels, one of the underlying issues of hyper-excitability in autoimmune neuromyotonia.

It is believed that antibodies to the Shaker-type K+ channels (the Kv1 family) are the type of potassium channel most strongly associated with acquired neuromyotonia and Morvan's Syndrome.

This disorder is also known as episodic ataxia with myokymia (EAM), hereditary paroxysmal ataxia with neuromyotonia and Isaacs-Mertens syndrome.

It is more severe than the related (and common) disorder known as benign fasciculation syndrome; it causes fasciculations, cramps, pain, fatigue, and muscle stiffness similar to those seen in neuromyotonia (another related condition).

Neuromyotonia (NMT), also known as Isaacs' syndrome, is a form of peripheral nerve hyperexcitability that causes spontaneous muscular activity resulting from repetitive motor unit action potentials of peripheral origin.

In some rare cases, acquired neuromyotonia has been misdiagnosed as amyotrophic lateral sclerosis (ALS) particularly if fasciculations may be evident in the absence of other clinical features of ALS.

Peripheral nerve hyperexcitability is an umbrella diagnosis that includes (in order of severity of symptoms from least severe to most severe) Benign Fasciculation Syndrome, Cramp Fasciculation Syndrome, and neuromyotonia.

Continuous Muscle Fiber Activity Syndrome Quantal Squander Isaacs-Merten Syndrome Isaacs' Syndrome None Neuromyotonia is a rare neuromuscular disorder characterized by abnormal nerve impulses from the peripheral nerves.

Carbamazepine is an approved treatment for manic depression and convulsions, but has side effects useful in treating attention-deficit hyperactivity disorder (ADHD), schizophrenia, phantom limb syndrome, paroxysmal extreme pain disorder, neuromyotonia, and post-traumatic stress disorder.

Experimental evidence exists that these anti-VGKC antibodies cause nerve hyperexcitability by suppression of voltage gated K+ outward currents, whereas other, yet undefined humoral factors have been implicated in anti-VGKC antibody negative neuromyotonia.

Various diseases and syndromes are associated with thymomas, including myasthenia gravis, polymyositis, systemic lupus erythematosus, rheumatoid arthritis, thyroiditis, Isaacs syndrome or neuromyotonia (a rare nervedisorder that causes constant muscle stiffness and cramping), and pure red cell aplasia.

It is also used off-label for a variety of indications, including attention-deficit hyperactivity disorder (ADHD), schizophrenia, phantom limb syndrome, complex regional pain syndrome, paroxysmal extreme pain disorder, neuromyotonia, intermittent explosive disorder, borderline personality disorder, Myotonia congenita and post-traumatic stress disorder.