Definition A sneeze is a sudden, forceful, involuntary burst of air through the nose and mouth. See also: Allergen Allergic rhinitis Allergy to mold, dander, dust Allergy and asthma resources Common cold Vasomotor rhinitis Alternative Names Sternutation Considerations Sneezing iscaused by irritation to the mucous membranes of the nose or throat. It can be very bothersome, but is generally not a sign of a serious problem. Common Causes Allergy to pollen, mold, dander, dust ( hay fever ) Corticosteroid inhalation (from certain nose sprays) Drug withdrawal Nasal irritants such as dust and powders Virus infections (common cold, upper respiratory tract infections, the flu)
Sneezing is a universal reflex which has many different styles and intensities but in most people, serves the same purpose. The first sneeze may occur at any age often starting in infancy. Although sneezing can be annoying, especially when it occurs repetitively, it is an important defense mechanism.
Why do we sneeze?
Sneezing is a reflex response (occurs without conscious thought, through nerve networks between the brain and the upper airway) to a trigger which is often an aerosolized particle. It begins with a trigger stimulating nerve endings in the upper respiratory tract. The upper respiratory tract (URT) includes the nose, mouth, sinuses and throat.
Have you ever eaten something that made you sneeze? The reason why this occurs is because there are nerve based sensors in the nose and throat area which upon being stimulated by certain substances, rapidly send signals to the sneeze center of the brain. The sneeze center is located in an area of the brai...
Causes There is no single cause for eating disorders. Although concerns about weight and body shape play a role in all eating disorders, the actual cause of these disorders appears to involve many factors, including those that are genetic and neurobiologic, cultural and social, and behavioral and psychologic. Although much has been written about the roles of families and parenting as causes of eating disorders, there is no solid evidence supporting this claim. Genetic Factors Anorexia is eight times more common in people who have relatives with the disorder. Studies of twins show they have a tendency to share specific eating disorders (anorexia nervosa, bulimia nervosa, and obesity). Researchers have identified specific chromosomes that may be associated with bulimia and anorexia. Biologic Factors The bodys hypothalamic-pituitary-adrenal axis (HPA) may be important in eating disorders. This complex system originates in the following regions in the brain: Hypothalamus . The hypothalamus is a s...
You should knowAnswers to your question are meant to provide general health information but should not replace medical advice you receive from a doctor. No answers should be viewed as a diagnosis or recommended treatment for a condition. Content posted by community members does not necessarily reflect the views of Remedy Health Media, which also reserves the right to remove material deemed inappropriate.