Depression before or during periods can have various causes, ranging in severity from 'worrying' to 'very serious'. Finding the true cause means ruling out or confirming each possibility – in other words, diagnosis.
Diagnosis is usually a complex process due to the sheer number of possible causes and related symptoms. In order to diagnose depression before or during periods, we could:
Do you suffer from depression during or before your period?
Possible responses:→ Don't know
PMS type D is characterized chiefly by depression.