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.
Hay fever, or allergic rhinitis, is an allergy that causes sneezing, watery eyes, and itching, often in response to pollen. Get some tips for avoiding it. Hay fever, or allergic rhinitis, is an allergy that causes sneezing, watery eyes, and itching, often in response to pollen.