Brief Answer:
Strongly suspect a nerve abnormality in the region

Detailed Answer:
Hello sir and welcome.

Thank you for writing to us.

I have gone through your query with diligence and would like you to know that I am here to help. There are numerous causes for such a presentation, and as I do not know your history and what all events have taken place prior to the presentation described by you I shall just go ahead and list out as many causes as I can remember and think of; they are:

+Peripheral neuropathy
+Peripheral artery disease
+Diabetes
+Heat burn
+Chemical burn
+Genital infectons
+Other infections (including sexually transmitted infections that can affect the nerves)
+Temperature (cold or hot)
+Different other neuropathies
and various other causes

The burning indicates an abnormality with the nerves, as there are no superficial symptoms seen. I would recommend a visit to your doctor for further evaluation and confirmation of the diagnosis, which in my opinion shouldn't be too difficult once a few investigations and tests are conducted.

Please feel free to write back to me for any further clarifications, I am always here to help.

Best wishes.

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