Facing this prblm for last 4 yrs since 2nd month of pregnancy, having severe pain only in right buttock & originating from the groove-like right side of lower back, it has nothing surely to do with the bones as I had an x-ray examined from an orthopaedic. It pains after 1-2 hrs of simple household chores / standing and does not settle unless i take a long rest/ sleep for 7-8 hrs, sometimes affects some right thigh muscles or don't know what, which get stuck while walking and causes pain. I am confused 2 what it is, is it neurological or neuromuscular or sciatica or something else? I have been trying palsinuron tablets since last 2 months which gives some relief, yet no complete relief, the severe pain recurs after much physical stress...