ATN often goes undiagnosed or misdiagnosed for extended periods, leading to a great deal of unexplained pain and anxiety.

Do you have steady, unexplained pain and swelling in your leg or calf?

Do you have steady, unexplained moderate pain, but you do not have swelling in your leg or calf?

The misfortunes of the 12-year-old girl who for the past six months has had an unexplained stabbing pain in one ear has prompted a sympathetic response.

And if you've experienced unexplained pain recently, it's easy to wonder whether you might even suffer from it.

A bone scan to look for damage to the bones, a tumor, or infection, or to find the cause of unexplained back pain.

Doctors were asked to be on the lookout for patients who had severe, unexplained abdominal pain, either with or without nausea or vomiting.

You have unexplained abdominal pain or swelling.

You have severe unexplained joint pain.

It's hard to treat vulvodynia, the otherwise unexplained pain, itching, and burning of a woman's exterior genitals.