What causes your hand to turn black?
Black discoloration of the hand can be caused several underlying medical conditions. Here are some possible causes:
- Frostbite: Prolonged exposure to extreme cold temperatures can cause frostbite, leading to tissue damage and discoloration of the affected area, including the hand.
- Gangrene: This is a serious condition that occurs when body tissue dies due to a lack of blood flow. Gangrene can cause the affected area to turn black, as well as become cold, numb, and painful.
- Raynaud's disease: A condition that affects blood circulation in the fingers and toes, causing them to turn white, blue, then red, in response to cold temperatures or emotional stress.
- Buerger's disease (thromboangiitis obliterans): A rare condition that causes inflammation and narrowing of the blood vessels in the hands and feet, leading to pain, discoloration, and eventually tissue death (necrosis).
- Deep vein thrombosis (DVT) of the upper extremity: A blood clot in a deep vein of the arm, which can cause swelling, pain, and discoloration in the hand and arm.
- Malignant melanoma: A type of skin cancer that can appear as a dark or black lesion on the skin, including the hand.
- Certain medications: Some drugs, such as certain chemotherapy medications, can cause skin darkening or discoloration as a side effect.
- Addison's disease: A disorder of the adrenal glands that leads to insufficient production of certain hormones, including cortisol, which can cause darkening of the skin in various areas, including the hands.
- Hemochromatosis: A condition characterized by excessive iron buildup in the body, which can cause skin darkening, particularly in areas exposed to sun, including the hands.
- Sepsis: A life-threatening condition caused by a severe infection spreading through the bloodstream, can lead to tissue damage and discoloration, including in the hands.
If you notice any sudden or persistent change in the color or appearance of your hands, it's important to consult a medical professional for accurate diagnosis and appropriate treatment.