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A hypnic jerk, hypnagogic jerk, sleep start, sleep twitch, myoclonic jerk, or night start is a brief and sudden involuntary contraction of the muscles of the body which occurs when a person is beginning to fall asleep, often causing the person to jump and awaken suddenly for a moment.
The disorder often leads to bodily injury from unwanted movements. Because of these incessant muscle contractions, patients' sleep patterns are often disrupted. It differs from restless legs syndrome in that RMD involves involuntary muscle contractions before and during sleep while restless legs syndrome is the urge to move before sleep. RMD ...
Catathrenia or nocturnal groaning is a sleep-related breathing disorder, consisting of end-inspiratory apnea (breath holding) and expiratory groaning during sleep.It describes a rare condition characterized by monotonous, irregular groans while sleeping. [1]
A 29-year-old man’s debilitating night terrors were the first sign of rare autoimmune disorder that rapidly progressed, landing him in the intensive care unit in a “catatonic state.”
Myoclonus is a brief, involuntary, irregular (lacking rhythm) twitching of a muscle, a joint, or a group of muscles, different from clonus, which is rhythmic or regular. Myoclonus ( myo- "muscle", clonus "spasm") describes a medical sign and, generally, is not a diagnosis of a disease .
Grunting has not been a big issue so far this year at Wimbledon. Several of the most prominent grunters on the women’s side, Azarenka and Aryna Sabalenka, pulled out of the tournament with injuries.
The hiccup is an involuntary action involving a reflex arc. [1] Once triggered, the reflex causes a strong contraction of the diaphragm followed about a quarter of a second later by closure of the epiglottis [ citation needed ] , a structure inside of the throat, which results in the "hic" sound.
The shouting can be accompanied by other symptoms, such as oculogyric crises or other involuntary movements. [2] The presentation of klazomania has been compared to temporal lobe epilepsy, although the two can be distinguished by the duration of the attack and the fact that the patient experiencing klazomania appears to retain consciousness. [2]