So can chemical fumes, including fumes some workers might get exposed to at their jobs. Strong odors such as perfumes also can cause the symptoms to start. These include dust, smog and cigarette smoke. Triggers of nonallergic rhinitis can include:
For instance, the nerve endings in the nose might react to triggers too easily.īut any cause brings on the same result: swelling inside the nose, congestion or lots of mucus. These blood vessels fill the tissue that lines the inside of the nose. The exact cause of nonallergic rhinitis is unknown.īut experts do know that nonallergic rhinitis happens when blood vessels in the nose expand.
