A lack of blood flowing through the right arm could cause numbness and tingling in the area. It may also cause swelling or discoloration.
There are many possible causes of restricted blood flow to the arms. For example, sleeping with the arm underneath the body puts pressure on the arm, preventing blood flow.
Some medical conditions might also cause problems with blood circulation that can lead to numbness, such asTrusted Source:
Atherosclerosis: This condition occurs when blood vessels narrow over time due to a buildup of fat and cholesterol, causing reductions in blood flow. People with atherosclerosis may require a combination of medications for blood pressure and lowering cholesterol.
Vasculitis: Vasculitis is inflammation of the blood vessels, which increases the risk of clots and blockages.
Diabetes: High blood sugar levels can damage the small blood vessels, meaning that the blood has to find an alternative route. Managing diabetes through the diet and using insulin may help prevent or reduce these symptoms.
