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. Nasal decongestant drops too relieve congestion.