--of upticks in symptoms with diabetic neuropathy during attempts to get blood sugar under control, and even with improved numbers. It is thought that this may involve the nerves having to metabolically re-adjust to "the new normal" of more stable blood sugars after they had upregulated their signalling to cope with neurologic compromise.

There is also the possibility of repairing nerves producing all sorts of wacky sensory symptoms. Nerve regenerate very slowly, and often the fibers have to fight their way around or through other tissue, and often take pathways different from the original ones, so there may be periods during which the brain interprets the incomplete or re-adjusting signals in unusual ways. This happens in non-diabetic neuropathies as well--it is most well documented in those who are recovering from nerve crush injuries from trauma.

Take a look at:

http://neuromuscular.wustl.edu/nother/diabetes.htm

http://neuromuscular.wustl.edu/nother/diabetes.htm#rxpn