Peek was born with a condition called macrocephaly, which damaged his cerebellum.    From Wordnik.com. Reference

Augmentation of the volume of the head is called macrocephaly, and there are a number of curious examples related.    From Wordnik.com.  [Anomalies and Curiosities of Medicine] Reference

In addition, 17 patients had excessive fatigability or exercise intolerance and several children had abnormal physical exam findings including six with facial dysmorphism, four with microcephaly, four with macrocephaly, and five with growth retardation.    From Wordnik.com.  [David Kirby: NEW STUDY - "Mitochondrial Autism" is Real; Vaccine Triggers Cannot Be Ruled Out] Reference

Over 90 percentofpeople with Cowdensyndrome (CS) have macrocephaly and skin changes, such as trichilemmomas, papillomatous papules, and acral or plantar keratoses (thickened skin or callouses on the palms of the hands and soles of the feet), by the time they are in their late 20s.    From Wordnik.com.  [PTEN Hamartoma Tumor syndrome] Reference

Yes, they are dressed in mini skirts and footless tights and they all have what look like orthopaedic boots on their unfeasibly large feet (probably to balance their unfortunate macrocephaly) and yet I would still say that they resemble My Little Pony, (which was manuafactured because little girls like hair and horses) far more than any human being, with perhaps the exception of a morphed Beyonce.    From Wordnik.com.  [The 7 worst sexy toys for children] Reference

Additional features of short stature, macrocephaly, facial dysmorphism, and generalised platyspondyly have been encountered.    From Wordnik.com.  [BioMed Central - Latest articles] Reference

We are not an macrocephaly grandee, we aeromechanics the sprawl cocksureness that impartation for improperly bobble protoplast.    From Wordnik.com.  [Rational Review] Reference

The authors write that this disorder, characterized mainly with CALMs, axillary freckling and macrocephaly, may be underestimated.    From Wordnik.com.  [EurekAlert! - Breaking News] Reference

Mild-to-moderate mental retardation was also common (62. 5\%), as were macrocephaly (50\%), and mild dysmorphic features (62. 5\%).    From Wordnik.com.  [MedPageToday.com - medical news plus CME for physicians] Reference

A 2008 study concluded that Peek probably had FG syndrome, a rare genetic syndrome linked to the X chromosome which causes physical anomalies such as hypotonia (low muscle tone) and macrocephaly (abnormally large head).    From Wordnik.com.  [OCAU News] Reference