Ads
related to: why do myoclonic seizures happen- Virtual Epilepsy Care
Virtual Care Regardless of Location
Receive Comprehensive Epilepsy Care
- Epilepsy
Learn About Medical & Surgical
Treatment Options Available
- Focal Seizures
Access a Free Treatment Guide.
Learn More About Seizures.
- Generalized Seizures
Access a Free Treatment Guide.
Learn More About Seizures.
- Virtual Epilepsy Care
Search results
Results from the WOW.Com Content Network
Myoclonic epilepsy refers to a family of epilepsies that present with myoclonus. When myoclonic jerks are occasionally associated with abnormal brain wave activity, it can be categorized as myoclonic seizure. If the abnormal brain wave activity is persistent and results from ongoing seizures, then a diagnosis of myoclonic epilepsy may be ...
These myoclonic twitches, jerks, or seizures are usually caused by sudden muscle contractions (positive myoclonus) or brief lapses of contraction (negative myoclonus). The most common circumstance under which they occur is while falling asleep (hypnic jerk). Myoclonic jerks occur in healthy people and are experienced occasionally by everyone.
This physiological phenomenon can also be mistaken for myoclonic seizure, but it can also be distinguished by different criteria such as the fact that hypnic jerk occurs at sleep onset only or that the EEG is normal and constant. In addition, unlike seizures, there are no tongue bites, urinary incontinence and postictal confusion in hypnic jerk.
Myoclonic seizures are brief jerks of limbs or body lasting milliseconds. [6] Tonic seizures are abrupt increases in muscle tone greater than 2 seconds in duration. [6] Clonic seizures occur as rhythmic body jerks. [7] Myoclonic-atonic seizures begins with one or more jerks (myoclonic phase) followed by a loss of muscle tone (atonic phase). [6]
There are three principal seizure types which may occur in JME: myoclonus, generalized tonic–clonic seizures and absence seizures. Approximately one-third of patients have all three seizure types. [13] The majority of patients (58.2%) have frequent myoclonic jerks, [13] with some sources stating that all patients with JME have myoclonic ...
Dravet syndrome (DS), previously known as severe myoclonic epilepsy of infancy (SMEI), is an autosomal dominant genetic disorder which causes a catastrophic form of epilepsy, with prolonged seizures that are often triggered by hot temperatures or fever. [1]
Patients with Unverricht–Lundborg disease exhibit myoclonic jerks and tonic-clonic seizures at a young age, between ages 6–16. The myoclonic jerks occur in the muscles of the arms and legs closest to the torso, and are triggered due to a variety of common external stimuli. [7]
Reflex absence seizures are also common, especially in response to certain kinds of triggering stimuli such as light, proprioceptive, cognitive, emotional, or linguistic. [2] Generalized tonic-clonic seizures are less common and can occur independently or more commonly after a cluster of myoclonic jerks or absence seizures. [2]
Ads
related to: why do myoclonic seizures happen