The period gives us unique insights into the workings of the reproductive system. The questions we ask are:
• When – regularity and length of cycle (early, late, on time)?
• How long – short or protracted period?
• How much – heavy, medium or scanty flow?
• Looks like – bright red, dark red, purplish, mucusy, clotty?
• Feels like – abdomen pain, backache, dull or sharp pain?
From such information we can already discern aspects of diagnosis related to Blood stagnation, or Qi deficiency or internal Heat or Cold and so on.