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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.
Cold shock response is a series of neurogenic cardio-respiratory responses caused by sudden immersion in cold water. In cold water immersions, such as by falling through thin ice, cold shock response is perhaps the most common cause of death. [ 1 ]
The sudden jerks and twitching of the body can often be so severe that it can cause a small child to fall. A myoclonic seizure (myo "muscle", clonic "jerk") is a sudden involuntary contraction of muscle groups. The muscle jerks consist of symmetric, mostly generalized jerks, localized in the arms and in the shoulders and also simultaneously ...
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.
1) You could have peripheral artery disease. One circulation-related condition that causes cold feet is peripheral artery disease (PAD), also sometimes called peripheral vascular disease. It ...
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]
What you may need help understanding is why your feet are literally always cold. Sometimes, healthcare providers can't find a reason, either. Sometimes, healthcare providers can't find a reason ...
Cold shock response is the physiological response of organisms to sudden cold, especially cold water, and is a common cause of death from immersion in very cold water, [5] such as by falling through thin ice. The immediate shock of the cold causes involuntary inhalation, which if underwater can result in drowning.