I Experience A Sensation, Much Like Hot Sand Paper Or

I experience a sensation, much like hot sand paper or pins and needles when having to stand up. This goes away eventually when I lie down and take the pressure of the feet. I also have a burning sensation across the lower buttocks and where the buttocks join the legs when I have to sit down. I have lower back pain. I have had a 3T MRI of the pelvis area but there is no evidence of any disk herniation and the inferior pudendal nerve are within normal limits.