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Rhythmic movement disorder (RMD) is a neurological disorder characterized by repetitive movements of large muscle groups immediately before and during sleep often involving the head and neck. It was independently described first in 1905 by Zappert as jactatio capitis nocturna and by Cruchet as rhythmie du sommeil . [ 1 ]
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These include sneezing, itchy eyes, watery eyes, and a drippy or itchy nose (but without fever). The symptoms may recur at the same time every year, or they can be constant throughout the year.
Individuals with exploding head syndrome hear or experience loud imagined noises as they are falling asleep or are waking up, have a strong, often frightened emotional reaction to the sound, and do not report significant pain; around 10% of people also experience visual disturbances like perceiving visual static, lightning, or flashes of light.
A migraine attack can be a debilitating condition. But a headache is just one part. There are other subtle warning symptoms to watch out for, neurologists say.
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 urge to itch may feel so severe that it could affect their ability to sleep. There are challenges that come with approaching treatment for senile pruritus because of the number of potential underlying causes physicians have to narrow down along with potential intolerances to certain therapies with people ages 65 or older. [ 19 ]
Head lice bites on the back of the neck Adult male (left) and female (right) head lice. Head lice are generally uncomfortable, but typically do not constitute a serious condition. [7] The most common symptom is itching of the head, which normally worsens 3 to 4 weeks after the initial infestation. The bite reaction is very mild, and it can be ...