These symptoms usually start soon after being exposed to an allergen. Signs and symptomsĪllergic rhinitis typically causes cold-like symptoms, such as sneezing, itchiness and a blocked or runny nose. It’s a very common condition, estimated to affect around one in every five people in the UK. Allergic rhinitis is inflammation of the inside of the nose caused by an allergen, such as pollen, dust, mould, or flakes of skin from certain animals.
