2. This infant presents with a misshapen cranium, most notably the flattened area on the posterior right side. His history includes limited passive neck rotation at birth, preferential head orientation, supine sleep position, and lower activity level.
Source: Wikimedia Commons; By Medical advises - http://larece.ru/?p=27115, CC BY-SA 3.0
Diagnosis: Plagiocephaly, literally means "oblique head" (from the Greek "plagio" for oblique and "cephale" for head). The incidence in infants at 7 to 12 weeks of age is estimated to be 46.6%. Of all infants with plagiocephaly, 63.2% are affected on the right side and 78.3% have a mild form.
For more information, see “Helmets for Positional Skull Deformities: A Good Idea or Not?” Clin Rev. 2015;25(2):16,18.