By and UPDATED December 16, 2015. The Federal Reserve decided to raise short-term interest rates for the first time since the financial crisis. Officials said the economy was strong enough to keep growing with a little less help from the central bank.
Clinical Relevance: Sinusitis. As the paranasal sinuses are continuous with the nasal cavity, an upper respiratory tract infection can spread to the sinuses. Infection of the sinuses causes inflammation (particularly pain and swelling) of the mucosa, and is known as sinusitis. If more than one sinus is affected, it is called pansinusitis.
These are called the paranasal sinuses. They lighten the skull and give resonance to the voice. The paranasal sinuses have the same kind of tissue that lines the inside of the nose. The same things that can cause swelling in the nose, allergies or infection, can also affect the sinuses. When the tissue inside the sinuses swells, mucus increases. Over time, air trapped inside swollen sinuses can create painful pressure inside the head. This is a sinus headache.