Many parents get worried when they notice that their baby’s head looks a little flat on one side — this is quite common in infants and is called positional plagiocephaly. It usually happens because babies spend a lot of time lying on their backs or on one side. The good news is that in most cases, the head shape gradually corrects itself as the baby grows, starts sitting, crawling, and spending more time upright. Parents can encourage tummy time during the day and gently change the baby’s sleepi