Pseudomyotonia (Q41393): Difference between revisions
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O termo pseudomiotonia (relaxamento lento dos músculos após contração voluntária) descreve a aparência clínica da miotonia na ausência de descargas miotônicas na eletromiografia. Pseudomiotonia é mais comumente observada como reflexos tendinosos de relaxamento lento ou "travados" de hipotireoidismo, embora outras causas sejam descritas. A pseudomiotonia é observada em cerca de um terço dos pacientes com síndrome de Isaacs, particularmente com preensão manual, mas também após fechamento de olho e mandíbula; raramente, este pode ser o primeiro sintoma. | |||
| description / en | description / en | ||
The term pseudomyotonia (slow relaxation of muscles after voluntary contraction) describes the clinical appearance of myotonia in the absence of myotonic discharges on the electromyography. Pseudomyotonia is most commonly observed as the slow-relaxing or “hung-up” tendon reflexes of hypothyroidism, although other causes are described. Pseudomyotonia is seen in about one-third of patients with Isaacs syndrome, particularly with handgrip, but also after eye and jaw closure; rarely, this can be the first symptom. | |||
Revision as of 07:32, 13 August 2026
The term pseudomyotonia (slow relaxation of muscles after voluntary contraction) describes the clinical appearance of myotonia in the absence of myotonic discharges on the electromyography. Pseudomyotonia is most commonly observed as the slow-relaxing or “hung-up” tendon reflexes of hypothyroidism, although other causes are described. Pseudomyotonia is seen in about one-third of patients with Isaacs syndrome, particularly with handgrip, but also after eye and jaw closure; rarely, this can be the first symptom.
| Language | Label | Description | Also known as |
|---|---|---|---|
| default for all languages | 8C71.5 |
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| English | Pseudomyotonia |
The term pseudomyotonia (slow relaxation of muscles after voluntary contraction) describes the clinical appearance of myotonia in the absence of myotonic discharges on the electromyography. Pseudomyotonia is most commonly observed as the slow-relaxing or “hung-up” tendon reflexes of hypothyroidism, although other causes are described. Pseudomyotonia is seen in about one-third of patients with Isaacs syndrome, particularly with handgrip, but also after eye and jaw closure; rarely, this can be the first symptom. |
