For some people, the classic symptoms of a sinus infection, including nasal congestion and discharge, are also accompanied by ...

When mucus is thin, your sinuses naturally clear out. But when the mucus becomes thick and blocks drainage, the sinus pressure builds, causing pain associated with a sinus headache, Reddy says.

Pinched nerves in the neck commonly cause headaches, muscle spasms, and other symptoms. They can be debilitating, but most of the time, they are treatable without invasive measures. However, sometimes ...

Free body diagrams do not need to be drawn to scale but it can sometimes be useful if they are. It is important to label each arrow to show the magnitude of the force it represents. The type of ...

Controlling the outflow of urine are two valves, or sphincters, located in the bladder neck and earliest portion of the urethra. The bladder neck sphincter is under involuntary (autonomic) control ...