Gua Sha treatments are not painful. Raising Sha removes blood stagnation considered pathogenic, promoting normal circulation and metabolic processes. The patient experiences immediate relief from pain, stiffness, fever, chill, cough, nausea, and so on. Red spots are an indication that toxins are being released. Where the area is deep purple the blood is old and extremely stagnant. A dark green discoloration is a sign that stagnant blood and toxic Qi are being released from the system. Sometimes a clear fluid will draw to the surface in a form that resembles cellulite or goose bumps. Where the skin starts out as a green glow which turns to red during the treatment, is a sign that pain or stagnant chi is being removed. The exposing of the Sha is literally removing disease from deep within the system.