Is PWS Inherited

Is PWS Inherited?

Most cases of PWS are attributed to a spontaneous genetic error that occurs at or near the time of conception for unknown reasons. In a very small percentage of cases (2 percent or less), a genetic mutation that does not affect the parent is passed on to the child, and in these families more than one child may be affected. A PWS- like disorder can also be acquired after birth if the hypothalamus portion of the brain is damaged through injury or surgery.