Fetal Pain: The Science Behind Why It Is the Medical Standard of Care.

Despite pain as the fifth vital sign in adult and pediatric care, many still dismiss the fact that immature human beings (whether a fetus, a preterm, or term baby) are capable of being affected by pain. Studies have demonstrated that avoiding, minimizing, and treating pain in babies, particularly when premature, improves their outcomes. Informed by the evidence, treating neonatal pain has become the medical standard of care for physicians in neonatology and anesthesiology. This article provides a brief overview of relevant publications that explain the clinical evolution that has led to the treatment of neonatal pain. This article also examines three arguments against the existence of fetal pain and presents evidence that refutes them. Informed by the research, a revised definition of pain is offered.