It seems as though it could be a few things, if you don’t feel anything in your skin, I would confirm that with a diagnostic X-ray or ultrasound. It could be a fibrous tissue mass under the toe. I would start with epsom salt soaks to help draw out anything stuck under the skin.
toe randomly is most suggestive of some type of peripheral nerve process.
More than likely it is local and effects one of the cutaneous or skin
nerves in the area. Given that you do not describe any radiating
presentation to involve other parts and it is quite limited in its area of
involvement this appears to be a benign focal irritation. Since you do not
describe any type of overlying skin eruption or rash, I do not believe
there is any type of skin disorder that may similarly present with this
type of feeling. I do not believe any formal evaluation or treatment is
required other than observation. Clearly if symptoms become more constant
and begin to involve a greater area of the foot this would warrant some
type of medical evaluation. There are systemic causes for what we
described as peripheral neuropathy to include diabetes and other metabolic
disorders, nutritional vitamin deficiencies, metal toxicities, traumatic or
entrapment and many that are simply idiopathic, we simply do not know the
cause. Best recommendation at this time is to simply keep a close eye on
the process and make sure there is no appreciated worsening.
Dr. Jonathan Kletz