Home > Pediatrics > Do you need a Bandage Once There is a Scab? Get the Flash Player to see this player. Rate: (Click the stars to rate) Published on May 26, 2010 by JMyers, Views: 5152 Ask VideoMD.com: Once a skin inury has a scab, is it necessary to wear a bandage? A scab on a wound means that it is healing sufficiently, and does not need a bandage. However, some children pick at scabs, and if your child will pick at the scab, then it is appropriate to cover it with a bandaid.