Multiple factors. Diabetic neuropathy is nerve damage and therefore can never be 100% restored. To improve and prevent further deterioration diet and exercise is the key. Keep blood sugars under control. Stop smoking (affects circulation to nerves) limit alcohol use which destroys nerves. Vit. B may levels should be checked and supplemented as required. Narcotics will mask the symptoms but won’t resolve the issue.
See a doctor. Diabetes causes nerve damage, resulting in numbness and wierd sensations like tingling, electricty, a feeling of having a tight band or sock around your foot, etc. It is best to be under the care of an orthopaedic foot & ankle surgeon or podiatrist as the loss of sensation can lead to ulcers and infections. There are also medications that can help if the nerve problem causes pain.
Check feet, b12, med. Most importantly, inspect your feet daily for small injures. If your feet are numb, you may not notice a little cut or splinter, and it can get infected. Vitamin b 12 can help. If the weird feeling (called paresthesia) is bothersome or keeps you from sleeping, there are prescription meds your doc can prescribe. And capsaicin cream (like they use for arthritis) can help.
Have it evaluated. If the symptoms are due to neuropathy, topical capsaicin may be helpful for some, while others may benefit with oral medications. Watch you sugar intake, and have your vitamin b levels checked and supplemented as necessary. Consult with your physician for an appropriate plan of care.