Menstrual cycle length can have various causes, just like most other symptoms. 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 menstrual cycle length, we could:
What is the average length of your natural menstrual cycle? Select 'normal' if you have been using hormonal birth control for over 6 months.
Possible responses:→ Very short (under 21 days)
→ Short (21 to 25 days)
→ Normal, 26-31 days / on birth control / don't know
→ Long (32 to 36 days)
→ Very long (over 36 days)