What is red blood or purple blood on the legs?

Red blood or purple blood on the legs may be caused by long-term lack of exercise or long-term standing, resulting in poor blood flow in the thighs, causing blood stasis, resulting in red blood or purple blood phenomenon. In addition, when the leg is injured, there will also be red blood, purple blood phenomenon. In addition, when the leg vasculitis occurs, or hormone abuse, it will also cause red blood, purple blood phenomenon in the leg.