runny nose or watery eyes at home can be caused by colder temperatures outside, or by a cold, flu, or allergies. Treatment includes drinking plenty of fluids, especially water, and getting as much rest as possible. You can relieve symptoms with a saline spray and placing a cool-mist humidifier near your bed to combat congestion that is aggravated by cold, dry air. However, do surgery and other treatments for runny nose help reduce this condition? Read on to find out more.