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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.
Many affected individuals also have other sleep related disorders, like sleep apnea. The disorder can be differentially diagnosed into small subcategories, including sleep related bruxism, thumb sucking, hypnagogic foot tremor, and rhythmic sucking, to name a few. [2]
It is a phenomenon in which the sleeper feels the presence of a supernatural, malevolent being which immobilizes the person as if sitting on their chest or the foot of their bed. The word "night-mare" or " nightmare " was used to describe this phenomenon before the word received its modern, more general meaning. [ 1 ]
The third is an adaptation of the belch reflex, which is the most commonly described mechanism. The swallowing of air immediately prior to regurgitation causes the activation of the belching reflex that triggers the relaxation of the LES. Patients often describe a feeling similar to the onset of a belch preceding rumination. [2]
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Sleep lines. Back-sleeping benefits and downsides. Sleeping on the back is also considered healthy and is associated with various health benefits. Back-sleeping is safe for most people, especially ...
Early signs are other symptoms like difficulty or inability to eat (loss of appetite, satiety after swallowing minor quantities), headache, dry mouth at night, sleeping issues, tremor, tension in the neck, in the throat, abdominal, stomach or chest pain etc.
Periodic limb movement disorder (PLMD) is a sleep disorder where the patient moves limbs involuntarily and periodically during sleep, and has symptoms or problems related to the movement. PLMD should not be confused with restless legs syndrome (RLS), which is characterized by a voluntary response to an urge to move legs due to discomfort.