1 Henoch-Schonlein purpura. 2  This condition is an inflammation of the smallest blood vessels (capillaries) of your skin, joints, bowel and kidneys. 3  Signs and symptoms include abdominal pain, blood in the urine, joint pain, and a rash on your buttocks or lower legs.
Allergic rhinitis, also known as hay fever, is a type of inflammation in the nose which occurs when the immune system overreacts to allergens in the air. Signs and symptoms include a runny or stuffy nose, sneezing, red, itchy, and watery eyes, and swelling around the eyes. The fluid from the nose is usually clear.
People with allergic rhinitis generally experience symptoms after breathing in an allergy-causing substance such as pollen or dust. In the fall, a common allergen is ragweed. In the spring, the most common triggers are grasses and pollen.llergic rhinitis, like skin rashes and other allergies, develops when the bodyâs immune system becomes sensitized and overreacts to something in the environment that typically causes no problem in most people. Allergic rhinitis is commonly known as hay fever.