@dam Hello, Vertigo is an allergy symptom. It is most common in sufferers of allergic rhinitis. Since seasonal allergens enter the body through the nose and mouth, the body reacts by trying to flush them out with mucus. Unfortunately, our bodies often overproduce mucus, which is why individuals with allergic rhinitis sometimes suffer from sore throats due to post-nasal drip. Some allergy sufferers have such a significant build-up of fluid in their sinuses that it can affect their vestibular symptoms. The vestibular system, and the eustachian tubes, in particular, are responsible for our sense of balance. If the eustachian tubes in the inner ear become blocked by fluid, patients can experience a variety of worrying symptoms, including dizziness and lightheadedness. If the blockage is particularly stubborn, they can also suffer from vertigo. The first step to treat it is to identify what specific allergens are causing the reaction. Over-the-counter allergy medications and nasal steroid sprays, as well as daily saline rinses, will bring some immediate relief. Thanks!