Sneezing
Sneezing, also known as sternutation, is a semi-autonomous, convulsive expulsion of air from the lungs through the nose and mouth, usually caused by foreign particles irritating the nasal mucosa. A sneeze expels air forcibly from the mouth and nose in an explosive, spasmodic involuntary action resulting chiefly from irritation of the nasal mucous membrane.
Causes[edit | edit source]
Sneezing is usually triggered when the mucous membranes of the nose or throat are irritated. This can be caused by a variety of factors, including:
- Allergies to pollen, dust mites, mold, and dander from animals
- Colds or flu
- Drug withdrawal symptoms
- Exposure to bright light (a condition known as photic sneeze reflex)
- Breathing in cold air
- Eating too much food (a condition known as snatiation)
Mechanism[edit | edit source]
Sneezing is a complex process that involves the contraction of several muscles in the body. The process usually begins with the irritation of the nasal mucosa, which triggers a signal to be sent to the brain. The brain then sends a signal to the muscles in the chest and abdomen to contract, which forces air out of the lungs and through the nose and mouth.
Sociocultural aspects[edit | edit source]
In many cultures, it is common for people to respond to a sneeze with a polite remark, such as "bless you" or "gesundheit". This is a form of superstition that dates back to ancient times, when it was believed that sneezing could cause the soul to leave the body.
Prevention and treatment[edit | edit source]
While it is not always possible to prevent sneezing, there are steps that can be taken to reduce the frequency of sneezes. These include:
- Avoiding known allergens
- Using a humidifier to keep the nasal mucosa moist
- Taking over-the-counter or prescription allergy medications
- Getting a flu shot to prevent the flu, which can cause sneezing
See also[edit | edit source]
Sneezing Resources | ||
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