Dr Blake's comment: The video above should explain what nerve root in your back is probably effected. Pressure on a nerve can cause both abnormal sensations and abnormal muscle function (ie your muscles are not supported the bones and they complain mightily.)
Dr Blake's comment: This does not sound like neuropathy, but, in the early stages of development, the symptoms can be atypical. If you were in my office, I would send you to our back doc to check if this was coming off your back.
Dr Blake's comment: Both a podiatrist to treat the local symptoms and a neurologist or physiatrist to evaluate and possibly treat the back. The MDs would definitely help in pinpointing the diagnosis better, but the lion's share of the treatment can be left with the podiatrist. Sure hope this helps. Rich