Some doctors used to think that infants and very young children did not feel pain. Even very premature babies feel pain. Young babies may be more sensitive to pain because the nerves that control pain are not fully developed. Sources of pain Injuries are the most common cause of pain in children. Ordinary bumps and scrapes cause minor pain.
Some injuries cause serious pain.
Stress can trigger headaches and tummyaches. Not all headaches and tummyaches are from stress, however. Pain that comes from stress is real and hurts just as much as other pain. Children may have pain from medical tests and treatments. Needles used to take blood or other body fluids for tests are common.