Parts of the Nervous System. show/hide words to know. 1  Central nervous system (CNS): a part of the nervous system which includes the brain and spinal cord. 2  Parasympathetic nervous system: the part of your nervous system that unconsciously controls your organs and glands when your body is at rest.
Sinus infection (sinusitis) is caused by allergies, infection, and chemicals or other irritants of sinuses. Signs and symptoms are headache, fever, and facial tenderness, pressure, or pain. Treatments of sinus infections are generally with antibiotics and at times, home remedies.
Most often, acute sinusitis is caused by a virus (known as acute viral sinusitis) or bacteria (acute bacterial sinusitis). This is why the terms sinusitis and  sinus infection  are used interchangeably. About 98 percent of acute sinusitis cases are caused by a virus. When viruses enter the sinuses, they can: