hi sounds like it may be raynards disease there are a few things that can help ed drugs help in low dose these help to relax and open your veins to allow more blood through or boric acid will also do the same and a lot cheaper to buy you just mix a quarter teaspoon in a litre of water and drink through the day and it works i have it daily for raynards and ed it helps with both. do hope this helps. good luck
feet become numb and cold after 20 miles of biking. not a problem in warm mweather.