Get pain in my buttocks when I climb stairs?

Buttock pain. Please describe more about the pain. Is it only when walking the stairs? Is it the same going up as going down. Does the pain radiate into your lower back or down your leg? Is is sharp pain, or burning or stabbing pain. Does it go completely away when you rest? Can you walk or run without pain? How old are you and what is your gender? Have you any spinal problems?