Artificial cranial deformation, head flattening, or head binding is a form of body alteration in which the skull of a human being is deformed intentionally. It is done by distorting the normal growth of a child's skull by applying force. Flat shapes, elongated ones (produced by binding between two pieces of wood), rounded ones (binding in cloth), and conical ones are among those chosen. Typically, it is carried out on an infant, as the skull is most pliable at this time. In a typical case, headbinding begins approximately a month after birth and continues for about six months.
Intentional cranial deformation predates written history; it was practised commonly in a number of cultures that are widely separated geographically and chronologically, and still occurs today in a few places, including Vanuatu.
The earliest suggested examples were once thought to include the Proto-Neolithic Homo sapiens component (ninth millennium BC) from Shanidar Cave in Iraq, and also among Neolithic peoples in Southwest Asia.
The earliest written record of cranial deformation—by Hippocrates, of the Macrocephali or Long-heads, who were named for their practice of cranial modification—dates to 400 BC.
In the Old World, Huns also are known to have practised similar cranial deformation. as were the people known as the Alans. In Late Antiquity (AD 300-600), the East Germanic tribes who were ruled by the Huns, the Gepids, Ostrogoths, Heruli, Rugii, and Burgundians adopted this custom. In western Germanic tribes, artificial skull deformations rarely have been found.