Flat Head Syndrome, also known as plagiocephaly and brachycephaly, is becoming so much more common today. Now that babies are sleeping on their backs, studies have shown that nearly half of all babies are developing flat spots on the head. Because this condition used to be much more rare, many new parents do not know much about it. This article will try to answer some of the common questions about this syndrome. What is Flat Head Syndrome? Flat Head Syndrome is a term often used to describe the medical conditions of positional plagiocephaly and brachycephaly. Plagiocephaly is when flattening occurs on one side of the head, and brachycephaly is when the flattening occurs across the entire back of the head. With brachycephaly, the head can almost take a cone shaped …