BL-31 - Upper Crevice

上髎 - Shàng liáo

Point Region: Lower back

BL

Bladder Meridian

足太阳膀胱经 - Zú Tàiyáng Pángguāng Jīng

Location & How to Find

Anatomical Location: On the sacrum, in the first opening in its back (the first posterior sacral foramen), the hollow just above BL-32.

How to Locate:

  1. Find BL-32, in the second hollow of the sacrum
  2. Move up along the sacrum to the next hollow
  3. The point is in that hollow
BL-31 (Upper Crevice) acupressure point location: On the sacrum, in the first opening in its back (the first posterior sacral foramen), the hollow just above BL-32.

How to Apply Pressure

Using a fingertip, apply gentle, steady pressure in the first hollow in the back of the sacrum, directly above the second hollow (BL-32). Firm but never painful pressure is enough; stop if it hurts. Do not press this point during pregnancy. Skip this point over irritated or broken skin.

Traditional Indications

In TCM, this point is traditionally used for:

  • Vaginal discharge
  • Menstrual irregularities
  • Sacral pain
  • Urinary difficulty
  • Reproductive disorders

Select a point to see its location, how to find it, and its traditional uses.

Important Precautions

Avoid this point with:

  • Pregnancy