What causes a drippy nose and how can it be treated effectively?

A drippy nose is often caused by Allergies, colds, or sinus infections. It can be treated effectively by using over-the-counter decongestants, antihistamines, nasal sprays, or saline rinses. In some cases, prescription medications or allergy shots may be necessary. Drinking plenty of fluids and getting rest can also help alleviate symptoms.