A pillow is provided for the treatment of deformational plagiocephaly. The pillow may have arms which define a void with varying diameters to facilitate holding an infant's head to cause reshaping of the posterior of the skull. An anchoring mechanism may also be included to hold the pillow in place. A webbing may also be used between the arms to encourage the arms to remain against the infant's head and/or to engage a surface on which the pillow rests and limit sliding or the pillow or the infant's head.
