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Although the exact mechanism for Harlequin syndrome is still unclear, understanding what is affected with this syndrome is important. The majority of cases are thought to occur when nerve bundles in the head and neck are injured. Such bundles are able to send an action potential from the autonomic nervous system to the rest of the body.
Many people, especially as they age, experience lightheadedness if they arise too quickly from a lying or seated position. Lightheadedness often accompanies the flu, hypoglycaemia, common cold, or allergies. Dizziness could be provoked by the use of antihistamine drugs, like levocetirizine, or by some antibiotics or SSRIs.
[4] [5] The rate of intake for cold foods has been studied as a contributing factor. [1] [6] It can also occur during a sudden exposure of unprotected head to cold temperatures, such as by diving into cold water. [7] A cold-stimulus headache is distinct from dentin hypersensitivity, a type of dental pain that can occur under similar circumstances.
Left untreated, the condition can put you at risk for eye infections and damage the surface of your eye, according to Mayo Clinic so it’s important to see an eye doctor if you’re experiencing ...
If you're traveling for the holidays, you're probably feeling a bit worn-down—but is it just fatigue, or could it be COVID-19?. It’s probably been a minute since you last thought about COVID ...
The TWIST gene in mice, functions in the development of the muscle and skeleton of the face, head, hands, and feet. Mice that were lacking both copies of the TWIST gene were spontaneously aborted prior to birth, and had serious deformities including abnormal limb and head defects and failure of the neural tube to properly close. However, mice ...
Often, affected individuals have a narrow forehead, small hands and feet, short height, and light skin and hair. Most are unable to have children. [2] About 74% of cases occur when part of the father's chromosome 15 is deleted. [2]
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