A chiropractic adjustment, also known as chiropractic manipulation, manual manipulation, or spinal manipulation, is the primary chiropractic treatment method for back pain. ​ Spinal manipulation relieves pressure on joints, reduces inflammation, and improves nerve function. It has been a trusted form of treatment since the ancient Greek Hippocrates documented manipulative techniques in his writings back in 1500 B.C. Today, spinal manipulation is used to treat conditions such as allergies, menstrual cramps and headaches.