In order to best treat a runny nose, the underlying cause contributing to symptoms should be identified and treated, if possible. For example, patients with allergic rhinitis can be treated with allergen avoidance (e.g. staying indoors/keeping windows closed during high pollen counts), nasal steroid and antihistamine sprays, oral antihistamines, and other prescription medications that lessen the body’s response to allergens. When these treatments fail over the long-term, some patients may benefit from allergy shots. On the other hand, conditions like the common cold caused by a viral infection typically do not require treatment with medications other than perhaps those used for temporary symptom control. Colds typically worsen for a few days and can last for several weeks in some instances. Because they are caused by viruses they do not respond to antibiotics like bacterial sinusitis. However, individuals with the common cold can take over-the-counter medications to reduce symptoms, such as guaifenesin which thins mucous. Furthermore, it is important to rest as much as possible, drink plenty of fluids, especially water, and use saline nasal spray to help relieve symptoms until the cold has passed. By contrast, bacterial sinusitis often requires treatment with antibiotics, best prescribed after a bacterial infection has been confirmed by a physician such as an Otolaryngologist who can look directly into the nasal cavity to distinguish this from other causes of rhinitis. For other causes of non-allergic rhinitis, prescription ipratropium bromide nasal spray may be effective; this medication is an anticholinergic nasal spray that directly decreases secretion of mucous from the glands in the lining of the nose. Newer treatment options are also emerging, such as cryotherapy treatment, where a device can be used during an office procedure to deliver cold temperatures to the out of balance nerves in the back of the nose, interrupting the signals being sent to the glands in the nasal lining to make excessive mucous.