Detailed images and illustrations of the physical symptoms of Prader-Willi syndrome are available on the website of the American Academy of Family Physicians in the American Family Physician journal. These images include photographs and a schematic of the facial features typical of this inherited disease.
Patients with Prader-Willi syndrome have a number of stereotypical facial features that include almond-shaped eyes and a down-turned mouth, according to Wattendorf and Muenke for American Family Physician. A narrow forehead and a misalignment of the eyes known as strabismus is also common. One of the most striking physical symptoms of this disorder is patients are almost always overweight due to metabolic deficiencies likely linked to dysfunctions of the hypothalamus. These dysfunctions are also likely responsible for the lack of genital development associated with Prader-Willi syndrome.