The medical term for hay fever is allergic rhinitis. It is very similar to asthma except for one important difference. If you have asthma, airborne particles cause an allergic reaction in your chest and lungs. If you have hay fever you experience this reaction in your eyes, nose, and throat.
The airborne irritant is called an allergen. When you are exposed to the allergen your body releases a chemical called histamine. This results in an inflammation in your sinuses, the fragile lining of your nasal passages, your eyelids and the surface layer of your eyes.
Common allergens that trigger hay fever are dust mites, pollen, animal skin and hair, and feathers.
There are two types of hay fever, seasonal and perennial. If pollen is the only allergen that triggers your hay fever, you have seasonal allergic rhinitis, as pollen is not present in the air all year long. Your symptoms will only appear when you are in an area where plants produce pollen at the time of year when this happens. However if your hay fever is triggered by dust mites, animal hair or feathers, it would be perennial as these airborne particles are present year round. It is also possible to have both perennial and seasonal allergic rhinitis if more than one allergen triggers your symptoms. People with allergic rhinitis will start to sneeze, develop a runny nose and red watery eyes whenever they are exposed to the allergen that triggers their attacks. The eyes also itch and rubbing them makes it worse. Sometimes the skin itches and the throat becomes dry. Wheezing also occurs. An allergy attack will be most severe for fifteen to thirty minutes. Most people are aware when they are allergic to pollen. However, they may not know what other allergens they react to. If this is a problem, physicians can perform skin tests to identify the allergens that trigger the attacks.
Once you know the substances you are allergic to, try to minimize your exposure to these irritants or avoid them altogether. There are many over the counter preparations designed to help hay fever sufferers. The most common are antihistamines. These can both prevent and stop an attack however they may need to be used for several days. Antihistamines have certain side effects such as dryness in the nose and throat and drowsiness. A person taking antihistamines should exercise caution about driving or operating machinery until they know how the medicine affects them. If over the counter medications are not effective, there are prescription medications available from a physician. Antihistamines only relieve the symptoms of hay fever. They do not cure it. However, if you have had a skin test and your doctor has identified the substance that triggers your attacks, it is possible to cure the underlying cause. The doctor can administer a series of desensitizing injections. These actually contain the allergen and are given in increasingly stronger doses to stop reactions. While they have been successful with some patients, they do not work for everyone.
