Constant, Clear-Fluid Runny Nose: Causes and Treatment - Healthline
Just about everyone has experienced a runny nose at some point. This symptom can have many different causes and characteristics. For example, a runny nose may only last a short time in some people and may be constant in others. The color of the nasal discharge can vary as well. In some cases, you may have a runny nose with clear fluid that's constant or persistent. Below, we'll explore some of the causes of a constant runny nose with clear fluid. We'll also address what you can do to ease your symptoms, and signs that it may be time to see your doctor. A runny nose happens due to an increase in the production of nasal mucus. While a runny nose can have many causes, it often occurs due to inflammation of the tissues inside your nose. This is known as rhinitis. The extra fluid that's produced can drain from your nose, down the back of your throat (postnasal drip), or both. While nasal mucus can have a variety of colors, the medical term for a runny nose with thin, clear f...