While most women have some premenstrual discomfort, far fewer have the severe and disruptive symptoms that make up PMDD. Far fewer doesn't mean rare since PMDD is present in about 5% of menstruating women. How can you tell if you suffer PMDD? The first step is to take our brief screener. While a screener cannot replace diagnosis by a qualified clinician, it can help you identify the presence of symptoms. If the screener suggests you are experiencing symptoms of PMDD, we strongly encourage you to seek help. We can probably give you a better idea if you have PMDD if you continue on in this section. To make a diagnosis for sure however, requires evaluation by a trained clinician.