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, also known as allergic rhinitis, is a common condition that shows signs and symptoms similar to a cold with sneezing, congestion, runny nose and sinus pressures. This article is about allergic rhinitis. You can read about non-allergic rhinitis here.