1 This condition is an inflammation of the smallest blood vessels (capillaries) of your skin, joints, bowel and kidneys. 2  Signs and symptoms include abdominal pain, blood in the urine, joint pain, and a rash on your buttocks or lower legs.
Description. Allergic rhinitis (AR) is the most common allergic condition and one of the most common of all minor afflictions. It affects between 10-20% of all people in the United States, and is responsible for 2.5% of all doctor visits.
Allergic rhinitis is the way some people respond to outdoor or indoor allergens. Outdoor triggers of allergic rhinitis include ragweed, grass, tree pollen, and mold spores. Indoor triggers include dust mites, pet dander, or mold that grows in humid indoor places such as carpets.