Polycystic Ovary Syndrome (pronounced as: pah-lee-SIS-tik OH-vuh-ree SIN-drohm) is defined as a problem that causes the hormones of a woman to go out of balance. This disease cause a plethora of problems with your periods and it can also make becoming pregnant a nightmare you never knew you had signed up for. Additionally, PCOS also can cause changes in your physical appearance if and it is not treated immediately could lead to more dire problems such as diabetes and heart disease.