Hi, your problem with deep breathing could be due to the
nasal congestion. The constant runny nose, sneezing, and
nasal congestion could be due to vasomotor rhinitis, in which the symptoms occur in response to a trigger, like eating spicy food or going outside in the cold. The primary treatment is simply avoiding the things that trigger your symptoms. It is often treated with a drying nasal spray (like Atrovent) and antihistamines like chlopheneramine and lovatidine are effective.