PWS is an uncommon genetic disorder that is present at birth in either male or female. It is the most common genetic cause of morbid obesity and can vary at different weights. Although the cause is complex, it results from a deletion or unexpression of genes from the paternal chromosome 15. This condition affects approximately 1 in 10,000 to 1 in 25,000 new-borns (Killeen, 2004). Individuals with this condition have serious problems controlling their weight as they have a very strong food compulsion before the age of six.
The condition is diagnosed through genetic testing. It is specifically DNA-based methylation testing to distinguish the absence of the paternal chromosome; chromosome 15.This test is recommended for new borns with pronounced hypotonia (praderwillisyndrome, 2010). An early diagnosis allows for early intervention as well as early provision of growth hormone (GH) treatment. GH gives an increased muscle mass and supports linear growth. GH