The most common complaint from plantar fasciitis is a burning, stabbing, or aching pain in the heel of the foot. Most sufferers will be able to feel it in the morning because the fascia ligament tightens up during the night while we sleep, causing pain to diminish. However, when we climb out of bed and place pressure on the ligament, it becomes taut and pain is particularly acute. Pain usually decreases as the tissue warms up, but may easily return again after long periods of standing or weight bearing, physical activity, or after getting up after long periods of lethargy or sitting down.
Sciatica-If you have injured your back, causing pressure on a nerve or compression of the nerves, this very well may result in pain in your foot and leg numbness.
Degeneration-As we age, the lumbar discs in our back start to degenerate. Sometimes the first symptom of disc degeneration is leg and foot pain and numbness.
Positional Leg Pain-Leg numbness can be caused by something as innocuous as sitting with your legs crossed for a long period of time, according to Healthhype.com. In addition, if you have been in a squatting position or have simply sat for too long, your leg or legs may become numb.
Tarsal Tunnel Syndrome-Foot pain can be caused by tarsal tunnel syndrome, which is compression of the tibial nerve at the ankle. In addition to pain, this can cause a burning or tingling sensation and numbness of the foot.
Diabetic Neuorpathy-A vast majority of those suffering from diabetes will have foot pain. When you experience this sort of nerve problem, it is considered neuropathy and it includes pain and numbness and can conceivably progress to the point where it results in disability.
These are just a few of the things that could be causing your numbness its always a good idea to stretch in the morning. Are you a diabetic? This is a frequent side effect of runners, walk alot, people who stand alot, diabetics, and as we age.
There are some "boots" that the doctor can prescribe to help but movement and massaging helps alot. I know in the morning it is very painful but after you stretch and move it seems to help. I know I had it and had to have steroid shots (it was my sciatica) and only lasted for a while and the shots hurt!!!! But, I followed my doc's advice and stretched holding my hands against the wall while I stretched my foot it worked after a while. I hope it works for you. The reason I asked if you were a diabetic as sometimes glucose levels if not kept stable affect your tissues, limbs.
Hope this helps and not too long winded.