Allergic rhinitis Seasonal allergic rhinitis In hay fever (also called seasonal allergic rhinitis), the lining of the nose becomes inflamed due to an allergic reaction to pollen. In other types of allergic rhinitis, the allergic reaction occurs in response to other normally harmless substances (allergens), such as house dust mites, flakes of skin shed from animals (such as cats or dogs), or feathers.
The allergic reaction is due to an exaggerated response of the immune system that, when exposed to the allergen, produces histamine and other chemicals that cause inflammation and fluid production in the nose and sinuses.
This, in turn, produces symptoms such as a runny, stuffy, or itchy nose; sneezing; an itchy throat; and itchy, Symptoms of hay fever and allergic rhinitis can be prevented by avoiding the allergen, if possible. Medication may be used relieve the symptoms of hay fever and allergic rhinitis. In severe cases, immunotherapy may be an option.
This involves gradually introducing increasing amounts of the allergen into the body in order to desensitize the immune system

Othere related diseases

HAY FEVER
Allergic rhinitis Seasonal allergic rhinitis In hay fever (also called seasonal allergic rhinitis), the lining of the nose becomes inflamed due to an allergic ...

HERPANGINA
Herpangina is a throat infection caused by a specific group of viruses known as enteroviruses, most commonly by coxsackieviruses—a group of viruses that can c...

LARYNGEAL CANCER
In laryngeal cancer, a cancerous tumor develops on the vocal cords themselves or just above or below the cords. The exact cause is unknown, but it is associated...

LARYNGITIS
In laryngitis, the larynx (voice box) is inflamed, usually as a result of infection. The condition may be acute, lasting for only a few days, or chronic and per...

LUNG CANCER
Malignant lung tumors are one of the common causes of cancer deaths worldwide. A tumor that originates in the lungs is known as primary lung cancer. A tumor tha...

NASAL POLYPS
Nasal polyps are growths in the lining of the nose, usually attached by a small stalk. Their cause is unknown, although they are more common in people with asth...

PHARYNGITIS AND TONSILLITIS
Viral sore throat | Bacterial tonsillitis Pharyngitis and tonsillitis are common disorders that are often described simply as a sore throat. The pharynx conne...

PLEURISY
Pleurisy is inflammation of the pleura, the two-layered membrane that covers the outside of the lungs and lines the inside of the chest. Causes of the condition...