Dr. Paul M. Salinas contributed to this article published on eHow.
Muscle knots can develop suddenly or over time, last for a few hours or the long term and often seem baseless — leaving you not only in significant pain but perplexed.
The knots get their colloquial name from the sensation they cause, as though your muscles are tied up in — you guessed it — tight knots. And they are extremely common, according to a National Institutes of Health report published in 2004, affecting an estimated 44 million Americans. When the pain doesn’t let up or worsens, it may be a sign of more serious muscle knots, commonly known as myofascial pain syndrome, myofascial pain disorder or myofascitis.