it could be that the person has back spasm
The cause of pain from between your thighs that moves to the back side could be a pulled muscle. This could also be cramping associated with the menstrual cycle or even a groin muscle tear.
Many things can cause lower back pain such as a pulled muscle or even a kidney infection.
yes it can cause back and chest pain.
quadratus lumbar
If you have swelling in your right cheek that is attached to your muscle, but there's no pain, this could be caused from a bruise. It's a good idea to see a doctor if it persists.
Pinched nerve .Or sciatica, an inflammation of the sciatic nerve.
The lower leg pain could be caused by the fall that just happened. Also the lower leg pain could be a bruised bone or a bruised muscle. It could also be a fracture in the bone.
Yes, Accutane can cause back pain. Back pain (and joint pain) are a common side effect of taking Accutane.
Could be a sign of an heart attack
Steroids have the side-effect of sometimes creating "back pumps" which would actually cause more back pain. Unless your back pain is from a muscle needing recovery (doubtful), anabolic steroids will do nothing positive for it.
Without an exam I would say this is a muscle spasm... The act of twisting (to pop your back) would 'stretch' the spasming muscle...