What causes a runny nose anatomy?

A runny or stuffy nose can be due to colds, allergies, sinus infections or the flu. When there is an excess of mucus secretions the nose is runny. The additional secretions drain from the front of the nose, or down the back (post-nasal drip).

Where do your sinuses drain?

Both air and mucus flow through your sinuses and drain into your nose, through tiny openings called ostia (or singular, ostium). Little hairs called cilia help the mucus move through the sinus cavities. The mucus from the sinuses drains into your nasal passages and then down the back of your throat to be swallowed.

Does a runny nose mean your sinuses are draining?

A runny nose is excess nasal drainage. It may be a thin clear fluid, thick mucus or something in between. The drainage may run out of your nose, down the back of your throat or both. The terms “rhinorrhea” and “rhinitis” are often used to refer to a runny nose.

Why does my nose run on one side only?

Sometimes, people experience a runny nose on one side, through just one nostril. Rarely, this can be a sign of an anatomical problem, like a leak of cerebrospinal fluid. It could also be caused by a deviated nasal septum.

What is the ball inside my nose?

Nasal polyps are soft, painless, noncancerous growths on the lining of your nasal passages or sinuses. They hang down like teardrops or grapes. They result from chronic inflammation and are associated with asthma, recurring infection, allergies, drug sensitivity or certain immune disorders.

What does it mean when your nose runs clear liquid?

There are many possible health conditions that can cause a constant, clear runny nose. Some of the most common causes include allergies, infections, and nasal polyps. Some other factors that can trigger a constant, clear runny nose include food, medications, and changes in hormones.

What does it mean when your nose drips like water?

Cerebrospinal fluid (CSF) rhinorrhea is a condition where the fluid that surrounds the brain leaks into the nose and sinuses. Head trauma, surgery, or even birth defects can make a hole in the membranes that hold this fluid. It then leaks into your nose or ear, causing a watery, runny nose.