I have had very similar sensations for some time now.
my neuro would not give me any solid information,, the mri was ok but these symptoms are getting very irritating.
This week, it's been lower back pain, bladder pain, pricklys in the scrotum, and achy testes.
I agree it does sound like nerve pain. Do you have any neck pain or stiffness. For this to affect upper and lower, it may originate in the neck
i'm not a dr by any means, but tend to agree with what your dermatologist told you. it sounds nerve related. but just out of curiosity, why did you go to a dermatologist for this problem instead of a neurologist? seems to me...and this is just my humble opinion....that perhaps you should make an appointment to see a nl and perhaps request an mri of your spine to see if anything is going on in that area. good luck!
elizabeth