Just below each hip towards each buttock why do i have an itchy sensation beneath the skin, numbness & pain when lying on the area at night?

Cauda equina: You may have a condition called cauda equina syndrome which is caused from nerves being irritated. There are many causes but most are mechanical and come from the low back or pelvis. They can even indicate a ruptured disk.\ you really should have an exam and make sure you do not have a metabolic problem such as diabetes, low calcium, etc.