Thrombosis
Blood clots can occur nearly anywhere in the body but are most common in the legs. If you have a blood clot in an organ, use the rules for Organ Failure. When you have a blood clot, the area around it may swell, turn slightly red or blue, and feel warm or itchy. You will also experience Pain (Affected Area) starting with IE 1 and increasing by 1 every 1d8 days until dissolved. You must succeed on a DC 15 + (IE) Constitution saving throw to reduce the IE. When the IE reaches 0, the blood clot is dissolved. A successful DC 12 + (IE) Wisdom (Medicine) check will treat a blood clot, giving advantage on the Constitution saving throw. If the IE increases above 4, the limb will need to be amputated, or it may travel to an organ, resulting in Organ Failure.