Buerger's diseaseBy Mayo Clinic staff
Original Article: http://www.mayoclinic.com/health/medical/IM04356
In Buerger's disease, your blood vessels swell and can become blocked with blood clots (thrombi). This eventually damages or destroys skin tissues and may lead to infection and gangrene (dark spots on the fingers in the illustration). Buerger's disease usually first shows in the hands and feet and may expand to affect larger areas of your arms and legs.