Gua Sha is another technique used to release muscle tension, tightness, and constriction. The patient may experience immediate relief from pain, stiffness, fever, chill, cough, or nausea. It is also valuable for the prevention of acute infectious illness, upper respiratory, or digestive problems. A specialized tool is used to gently scrape or rub the skin over a problem area for cutaneous stimulation that results in the appearance of small red petechiae similar to a bruise. This usually fades in two to three days.