I keep having horrible pains in my lower back, usually when i put pressure on it or bend over. what could it be?

Exam by physician: Back pain has many etiologies. One of most common causes in your age is soft tissue or muscle strain. Spondylolysis is fracture in posterior part of lumbar vertebrae L4 or 5. When bilateral vertebra can slip forward.Disc disease can also occur in young individuals usually symptoms more on one side than other, sometimes into lower extremity.Sometimes imaging with x-rays and bone scan necessary.