Redness around the nose is often an indicator of rosacea, a chronic skin disease that affects millions of people in the United States, according to WebMD. Other causes of facial redness include contact dermatitis, adult acne and lupus.
Doctors do not have conclusive evidence on the cause of rosacea, which results in swelling of the capillaries near the skin's surface, according to U.S. News and World Reports. Researchers believe heredity, the immune system and the bacteria responsible for peptic ulcer disease are possible causes. Working with a dermatologist to manage symptoms helps to prevent them from growing worse.
WebMD reports that contact allergies from products designed for use on the face sometimes result in facial redness. Benzoyl peroxide, found in many acne medications, and alpha hydroxyl acids often irritate contact dermatitis and cause redness on and around the nose. Irritant allergens often cause an immediate reaction, but some allergic reactions do not appear for several days after use of the product.
Adult acne differs from the acne suffered by teens, according to About.com. In adults, the skin is thinner and more susceptible to irritation from harsh cleansers. After cleansing, using moisturizer helps to reduce the redness.
Some lupus sufferers experience a rash in the shape of a butterfly on the face. According to The New York Times, the rash rarely cause scarring but may leave damaged capillaries.