Allergic rhinitis, often called hay fever, is a condition that affects 40 to 60 million Americans. Allergies occur because the body overreacts to certain substances that are not actually harmful, signaling the immune system to release histamine and other inflammatory chemicals.
Allergies can happen to anyone at any time at any age. However, you are more likely to develop allergic rhinitis if you have a family history of allergies. Families share the same genetics and environments and tend to eat the same foods.
Allergic rhinitis is often categorized into two types, but they often overlap:
Equally, if not more commonly, sensitivities to foods and food additives and yeast overgrowth create symptoms very similar to traditional allergic rhinitis. Allergy testing, which is specific for an IgE or histamine type response, is often negative in these cases, hence the term, nonallergic rhinitis.
Typical symptoms of allergic rhinitis are sneezing, itching, watery eyes, postnasal drip, sinus headaches, nasal congestion, nasal obstruction, thick phlegm, throat clearing, and hoarseness. Allergies can also cause migraine headaches, snoring, chronic fatigue, ear infections, sinus infections and asthma. People who suffer from chronic allergic rhinitis conditions can become depressed and incapacitated if their symptoms are not controlled.
Diagnostic testing is done primarily by two methods: scratch testing (or subcutaneous injections) or blood testing (RAST). Both tests have about a 50% sensitivity rate in terms of allergic rhinitis, because they are indirectly testing the skin and blood (IgE) to see if it correlates with a mucosal allergic response (IgA). If these tests are positive, they are accurate, but if they are negative it does not mean you do not have allergies. Sometimes you can have allergic symptoms, but they are not happening from IgE specific pathways. Food sensitivities are an example of this.
There is more involved blood testing depending on symptoms and history. Even with these tests (ALCAT, Genova diagnostic, etc) which can be expensive and generally not covered by insurance, the cause of your symptoms is not easily identified. Keeping a food diary or symptom diary related to your environment can be quite helpful.
Treatments are aimed at resolving the symptoms as well as the cause.
For treatment of symptoms, options are:
For treatments of causes, options are:
Air filters and environmental changes – Often, the source of your symptoms comes from something you are breathing in every day. If you take a lot of allergy medications and your symptoms do not improve, it may be because you are constantly exposed to allergens in your home or office. Black mold is very common in New York City apartments and old houses, as are environmental toxins. Air filters, such as a the Venta Airwasher and Winix Plasmawave, can help clean your immediate environment if you place them near your bed when you sleep or near your desk at work. In cases of black or toxic mold, professional cleaning is usually required.