Black fingers, purple, serious?

Finger black, purple, to see if there is no specific reason, if it is subjected to trauma extrusion, causing local ischemia, hypoxia and showing finger black, purple, may cause gas gangrene, it is recommended to the hospital surgery, symptoms are more serious at this time. If other diseases, such as Addison's disease, also known as adrenocortical hypofunction, will also cause serious consequences, but also to the hospital endocrinology department. In addition, it may be melanoma, it is recommended to the oncology department for treatment. Specific reasons, specific conditions to be specific analysis, whether serious depends on the actual situation, but all need to go to the hospital in time to find out the cause of finger blackening, purple.