In 1877, Massachusetts passed the Nation's first factory inspection law. It required guarding of belts, shafts, and gears, protection on elevators, and adequate fire exits. Its passage prompted a flurry of State factory acts.
These muscles can cause pain in the right upper back after injuries, such as a muscle strain or bruise from a car accident or fall. Overuse from work or recreational activities, such as painting or playing racket sports, might also be to blame -- especially for people who are right handed.
Appendicitis is undoubtedly one of the most common causes of lower right side stomach pain. It can occur in anyone and at any age, but: It is more common between ages 7 to 39. It may start as a pain in the upper abdomen or around the belly button and then the pain moves to the right lower abdomen.