What Are the Different Types of Allergies?
By Health Talk
Medically Reviewed by Ed Zimney, MD
As many as 50 million Americans are allergic to something — whether pollen, peanuts, or pet dander. But not all allergies are the same. Here’s a rundown of the most common kinds of allergies.
Allergic rhinitis: swelling and inflammation of nasal passages, congestion, sneezing, and itchy, watery eyes caused by a variety of outdoor and indoor allergens.
Sinusitis: an infection of the sinuses sometimes related to or caused by allergic rhinitis or asthma. However, at least half of all chronic sinusitis is not caused by allergies.
Asthma: inflammation of the lungs and airways and constriction of the bronchial tubes triggered by many of the same allergens as allergic rhinitis, and resulting in wheezing, chest tightness, shortness of breath and coughing.
Food allergies: symptoms such as rash, vomiting and diarrhea, coughing, wheezing, facial swelling, hives, and others triggered by specific foods in some people. Food intolerances, such as lactose intolerance, are more common, but they are not considered allergies because they do not involve an allergic reaction.
Bee sting allergy (insect venom allergy): one of the most dangerous allergic reactions, especially for people who are severely allergic to bee stings. Causes swelling and inflammation around the site of the sting, and in severe cases, an anaphylactic reaction that involves the entire body. Symptoms include hives, swollen airways, wheezing, difficulty breathing and swallowing, increased pulse rate, and decreased blood pressure causing dizziness. People with bee and insect venom allergies must carry an epinephrine (adrenaline) self-injection kit (brand names include EpiPen and Twinject) with them at all times in case they are stung.
Latex allergy: a reaction to the manmade material Latex, most often in the powder residue that coats the latex in rubber gloves, which can become airborne. Symptoms may include asthma, itching and rash, hives, watery eyes, and anaphylaxis.
Drug allergies: reaction to certain medications, such as penicillin, sulfa drugs, anti-seizure medications, and aspirin that may cause hives or other symptoms when taken.
Skin contact allergy: also called contact dermatitis, an allergic reaction caused by direct contact with an allergen that produces inflammation ranging from localized redness to open sores. Common causes are acid and alkaline materials, including soaps and detergents; solvents, adhesives, and other industrial chemicals; poison ivy, oak or sumac; nickel and other metals used in jewelry; topical medications, including antibiotics and anesthetics; rubber; perfumes or cosmetics; fabrics such as wool and clothing made from such fabrics.
Eczema: a very common form of dermatitis and often a lifelong condition in people who are hypersensitive to a wide range of skin irritations. Symptoms include dry, scaly skin appearing on red, inflamed areas; extreme itchiness, and a burning sensation.
Allergic conjunctivitis: also called pink eye, an inflammation of the conjunctiva, the tissue on the inside of the eyelid that keeps the eyeball and eyelid moist. Can be triggered by contact with substances such as shampoo, cosmetics, dirt, smoke, pool chlorine, or various allergens.
Chemical sensitivity: not the same as an allergic reaction, the inability of the affected person to tolerate environmental chemicals, such as pesticides, solvent fumes and other air contaminants. Symptoms can include respiratory problems, nausea, headache, fatigue, cognitive dysfunction, heart arrhythmia, or seizures.