Bladder
BL28
膀胱俞 · Pangguangshu
Bladder Shu
Sacral bladder shu. Learn it; don’t self-treat urinary infection.
Back-shu of the Bladder
Use caution
System
- Channel
- Bladder (BL)
- Element
- Water
- Yin or yang
- yang
- Organ system
- Bladder
- Region
- Back
- Limb rule
- Foot Taiyang
Where it is
On the sacrum, two finger-widths lateral to the midline, level with the second sacral foramen, just below BL27.
Nearby: Sacrum and the pelvic organs anteriorly. Gentle pressure.
Traditionally said to
Back-shu of the Bladder. Traditional point for urinary patterns and sacral pain. Burning urination or blood in the urine needs a clinician.
What people look up
Acupressure
Mild sacral pressure, 30 seconds, as a location lesson more than a treatment.
When not to press: Urinary pain, fever, pregnancy, or pelvic pain: get care.
About 30–90 seconds is the usual window, unless the step above is shorter. Stop if pain, dizziness, or anything unusual shows up.
Licensed practice only
Needle depth, angle, electroacupuncture
Textbook language for students. Not instructions. A cun is a body-inch on that person, not a ruler inch. Do not needle yourself.
Depth
Common textbook range: about 0.5–1 cun perpendicular.
Angle
Perpendicular, at the sacral foramen level.
Electroacupuncture
Introductory charts rarely assign a standard electroacupuncture setting here. Clinics that use current choose frequency and intensity for that person. No milliamp figure is given, because copying one would be misleading.
Nearby on this channel
Small Intestine Shu
Sacral point, small intestine shu.
Use caution
Middle of the Crook
Middle of the back-knee crease. Command point for the back.
Use caution
Large Intestine Shu
Low-back point for the large intestine shu and local ache.
Support the Mountain
Mid-calf point for cramp and the back of the leg.
Use caution
Herbs often paired for a similar pattern
Tags
pangguangshu · bladder shu