Why is keeping a daily record of symptoms necessary to make a diagnosis of PMDD?
A daily symptom diary kept over at least two cycles may not always be necessary to diagnose PMDD. However, it is the best way to confirm the diagnosis based on the type and severity of symptoms and their presence or absence across the various phases of the menstrual cycle. Surprisingly often, women who think they have PMDD learn through the use of a daily symptom diary that such is not the case.
