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Some forms appear to be stimulus-sensitive. Some people with sleep myoclonus are rarely troubled by it, or need treatment. If it is a symptom of more complex and disturbing sleep disorders, such as restless legs syndrome, it may require medical treatment. Myoclonus can be associated with patients with Tourette syndrome.
According to a study on sleep disturbances in the Journal of Neural Transmission, a hypnic jerk occurs during the non-rapid eye movement sleep cycle and is an "abrupt muscle action flexing movement, generalized or partial and asymmetric, which may cause arousal, with an illusion of falling". [13]
Lesions involving this circuit may produce palatal myoclonus, one of the few involuntary movements that do not disappear during sleep. [4] Palatal myoclonus may be seen as a component of the lateral medullary syndrome (a.k.a. Wallenberg Syndrome), if the infarction extends to involve the central tegmental tract.
Treatment-emergent central sleep apnea (TECSA), also known as complex sleep apnea, is a type of sleep apnea that typically develops when a patient starts CPAP therapy for OSA. This can occur when ...
Focal and/or generalized seizures of various types (e.g., generalized tonic-clonic, atonic, myoclonic seizures, bilateral eyelid myoclonus, gelastic seizures) Atypical childhood epilepsy with centrotemporal spikes Continuous spikes and waves during slow-wave sleep syndrome Landau-Kleffner syndrome: Generalized and/or focal Epileptic spasms ...
The three main signs of hyperekplexia are generalized stiffness, excessive startle response beginning at birth, and nocturnal myoclonus. [5] Affected individuals are fully conscious during episodes of stiffness, which consist of forced closure of the eyes and an extension of the extremities followed by a period of generalised stiffness and uncontrolled falling at times. [6]
Myoclonus is usually classified physiologically to optimize treatment. Myoclonus is a precursor effect to myoclonus dystonia and most commonly begins in childhood or adolescence. [4] [5] Myoclonus is classified as cortical, subcortical, peripheral or spinal. Cortical myoclonus is the most common of these four and affects the upper limbs and face.
Sleep apnea, obstructive sleep apnea, obstruction of the airway during sleep, causing lack of sufficient deep sleep, often accompanied by snoring. Other forms of sleep apnea are less common. [89] Obstructive sleep apnea (OSA) is a medical disorder that is caused by repetitive collapse of the upper airway (back of the throat) during sleep.