If diabetic foot feels numb, it is a manifestation of diabetic peripheral neuropathy. Diabetic foot is a complication that occurs after diabetes has advanced to a certain degree, so it is normal for a person with diabetic foot to feel numbness. Some patients with severe diabetic neuropathy may not even feel pain during debridement, which involves cleaning the local tissues. A healthy person would definitely feel pain, but a diabetic patient, due to their neuropathy, may not feel much, if any, pain. For such patients, the main treatments are firstly, definitely controlling blood sugar and blood pressure; secondly, using medications that nourish the nerves; and thirdly, improving circulation to aid local blood flow.