sentences:  For older babies and adults, circumcision is often performed surgically without specialized instruments, and alternatives such as Unicirc, Prepex or the Shang ring are available.The circumcision procedure causes pain, and for neonates this pain may interfere with mother-infant interaction or cause other behavioral changes, so the use of analgesia is advocated.Ordinary procedural pain may be managed in pharmacological and non-pharmacological ways.