Altered Facial Color: Five colorings that indicate certain illnesses. When healthy, the skin on the face usually has a slight hint of pink.
Yellow spots are probably the most common and is caused by liver disease or bile disease. Blue skin discoloration is cyanosis or “blueness” and can be an indication of a life-threatening condition. If the skin is exposed to heat for a long time, the so-called “fire blush”, which doctors call erythema ab igne can occur.