Diaphragm Shu (BL-17) Pressure Point: Benefits & Technique

The Diaphragm Shu pressure point (BL-17) is a back-shu point used to support diaphragm function and “blood” regulation in TCM, commonly applied for hiccups, nausea/vomiting, asthma-like breathing difficulty, night sweats, and blood-related patterns. It’s located on the upper back beside the spine at the level of the 7th thoracic vertebra (T7).

In Traditional Chinese Medicine, BL-17 is called Géshū (Diaphragm Shu). It’s also known as the Influential (Hui-Meeting) Point of Blood, a classical designation used when symptoms suggest blood stagnation, blood deficiency, or heat in the blood. In modern bodywork language, this area often overlaps with paraspinal myofascial tension that can affect breathing mechanics and upper abdominal/diaphragm comfort.

Introduction & Definition

What is the Diaphragm Shu pressure point?
The Diaphragm Shu pressure point refers to BL-17 (Géshū) on the Bladder (BL) meridian, located bilaterally on the back near T7. In TCM, it’s the Back-Shu point of the Diaphragm and the Hui-Meeting point of Blood, meaning it’s traditionally selected to influence diaphragm Qi movement (helping rebellious Qi descend) and to regulate blood (invigorate, nourish, cool, or move—depending on the pattern).

Visitors typically come to BL-17 for one of two reasons:

• Diaphragm-related symptoms: hiccups, nausea/vomiting, belching, chest/upper abdominal tightness, shortness of breath
• Blood-related patterns (TCM): fatigue with pallor, tendency to bruising, certain bleeding patterns, menstrual irregularity patterns, or night sweats (when tied to deficiency/heat patterns)

Summary Table

Attribute	Details
Pressure Point Name	BL-17 – Diaphragm Shu
Body Area	Body
Exact Location	~2 finger-widths (about 3–4 cm) lateral to the lower border of the T7 spinous process
Common Uses	Hiccups, nausea/vomiting, asthma-like breathing difficulty, night sweats, blood-related TCM patterns
Stimulation Technique	Firm thumb or finger pressure, 1–3 minutes (each side)
Contraindications	Avoid deep pressure over acute injury; use caution in pregnancy and with bleeding disorders/anticoagulants

Clinical Significance & Associated Conditions

In clinic-style acupressure protocols, BL-17 is most often chosen when symptoms suggest “rebellious Qi” (upward counterflow) or blood disharmony.

Common presentations where BL-17 may be considered

• Hiccups and diaphragm spasm patterns
  • Especially when hiccups are persistent, stress-related, or paired with chest tightness
• Nausea/vomiting or belching
  • In TCM terms: Stomach Qi failing to descend
• Breathing discomfort
  • Tight chest, shallow breathing, asthma-like patterns (as supportive care—not a replacement for medical treatment)
• Night sweats
  • Often discussed in TCM as deficiency heat or blood/yin deficiency patterns
• “Blood disorders” (TCM framing)
  • Blood stasis signs (fixed pain, dark/purple coloration, choppy pulse—practitioner assessment)
  • Blood deficiency signs (pale complexion, dizziness, dry skin—pattern-dependent)

From a modern perspective, BL-17 sits over thoracic paraspinal muscles and may influence symptoms through:

• Myofascial release of the upper thoracic region (supporting ribcage expansion)
• Autonomic modulation via thoracic segment stimulation (a proposed mechanism often discussed for back-shu points)

Location

BL-17 is located on the upper back, beside the spine at the T7 level, on both the left and right sides.

How to find BL-17 (simple landmark method)

1. Find T7 level: With arms relaxed by the sides, the lower tip of the shoulder blade often aligns around the mid-thoracic region (commonly near T7, though bodies vary).
2. Identify the midline spine: Feel for the bony ridge of the spine.
3. Move lateral: From the midline at T7, move about two finger-widths (roughly 3–4 cm) outward.
4. Confirm the spot: BL-17 is typically in a slight hollow or tender band of the paraspinal muscles.

Because this point is bilateral, you’ll locate one on each side of the spine at the same horizontal level.

How to Stimulate It

Because BL-17 sits close to the ribcage and lungs, acupressure should be firm but controlled, avoiding aggressive poking.

Standard acupressure technique (self-care)

• Position: Seated and leaning forward onto a table/pillow, or lying face down with a pillow under the chest for comfort.
• Tool: Thumb pads, two fingers, or a massage ball against a wall (gentle control).
• Pressure level: Firm, comfortable pressure (about 6–7/10), not sharp pain.
• Method:
  • Press and hold, or use small slow circles
  • Keep breathing steady; aim for the ribcage to soften on exhale
• Duration: 1–3 minutes per side
• Frequency: 1–2 times daily for general support; up to 2–3 times daily short-term for acute hiccup/nausea patterns (as tolerated)

Pairing tip (clinical-style)

BL-17 is often used as part of a front-back strategy: a back-shu point to regulate and a front point to harmonize the chest/upper abdomen. If you’re building a routine, keep it simple: choose 1–3 points total, not 10.

Benefits and Common Uses

Potential benefits (TCM + modern interpretation)

• May help settle hiccups and diaphragm spasm
  • TCM: harmonizes diaphragm Qi, directs rebellious Qi downward
  • Modern: may reduce upper thoracic guarding and improve breathing mechanics
• May ease nausea/vomiting patterns
  • Often used when symptoms feel “stuck” in the chest/upper abdomen
• May support easier breathing
  • TCM: assists Lung Qi and diaphragm movement
  • Modern: may help ribcage mobility via paraspinal release
• May support “blood regulation” (TCM)
  • Used for blood stasis and blood deficiency patterns (pattern selection matters)
• May help with night sweats linked to deficiency/tension patterns
  • Often combined with other points based on whether heat, deficiency, or stress is primary

If your main symptom is respiratory, you may also want to review the back-shu point for the Lung: Lung Shu (BL-13) Pressure Point: Benefits & Technique.

Physiological Functions & Mechanisms

TCM framework

BL-17 is classically described as:

• Back-Shu point of the Diaphragm: supports the functional “pivot” between upper and middle burner
• Influential point of Blood: used to move blood stasis, nourish blood deficiency, and clear blood heat (pattern-dependent)

In practical TCM terms, it’s a “regulating” point—often selected when symptoms involve:

• counterflow (hiccups, vomiting, cough/wheeze)
• constraint/stagnation in the chest
• blood disharmony contributing to fatigue, pain, or sweating

Modern hypotheses (evidence-informed, not point-specific)

Direct BL-17 trials are limited, but plausible mechanisms discussed for thoracic paraspinal acupressure/acupuncture include:

• Segmental autonomic effects: stimulation near T7 may influence sympathetic outflow and reflex pathways that affect visceral function and respiratory patterns.
• Myofascial effects: pressure may reduce tone in the erector spinae and related thoracic fascia, supporting rib excursion and diaphragmatic coordination.
• Breath regulation: slow pressure paired with exhale can shift toward parasympathetic tone (a common clinical goal in nausea/tension patterns).

For broader background on how acupuncture/acupressure is studied, see the NIH’s overview of acupuncture research via the National Center for Complementary and Integrative Health.

Practitioner Insight (first-person allowed here only)

When BL-17 feels “right” clinically, it’s often because the patient’s upper back is subtly braced—shoulders lifted, breath high in the chest, and the diaphragm not moving smoothly. I typically cue longer exhales during pressure and keep the technique conservative; BL-17 responds better to steady contact than force.

Safety & Contraindications

BL-17 is generally appropriate for gentle-to-firm acupressure, but the region requires extra respect because it overlies the thoracic cage.

Avoid or use caution

• Pregnancy: Use caution with strong stimulation on back-shu points unless guided by a qualified clinician.
• Bleeding disorders or anticoagulant use: Avoid aggressive pressure that could cause bruising.
• Acute back injury, rib pain, or spinal inflammation: Avoid direct pressure until evaluated.
• Severe or sudden breathing symptoms: Acupressure is supportive care only—seek urgent medical evaluation when needed.
• Unexplained vomiting, blood in vomit, black stools, or persistent night sweats: These require medical assessment.

For best practices, review our acupressure safety guide and browse technique fundamentals in our acupressure library.
As always, listen to your body and stop if discomfort arises.

Related Points & Techniques

BL-17 is rarely used alone in professional protocols. Consider these common pairings (choose based on your primary symptom and tolerance):

Complementary pressure points (with library links)

• For Lung/respiratory support: Lung Shu (BL-13)
• For shoulder/upper thoracic tension patterns that restrict breathing: Middle Shoulder Shu (SI-15)
• For circulation and vessel regulation themes (adjacent conceptually to “blood” work): Channel Ditch (LU-8)
• For throat/neck regulation that can accompany rebellious Qi patterns: Support the Prominence (LI-18)

Simple adjunct techniques

• Diaphragmatic breathing (2–4 minutes): Inhale gently through the nose; lengthen the exhale while holding BL-17.
• Gentle thoracic mobility: Seated cat-cow or supported chest-opening over a pillow to reduce upper back guarding.
• Heat (pattern-dependent): Warm compress for stiffness/tension patterns; avoid heat if you run hot or have active inflammation.

Scientific Perspective

BL-17-specific clinical trials are limited in major biomedical databases, so most modern discussion is extrapolated from broader research on acupuncture/acupressure mechanisms and thoracic/back-shu applications.

What research can support at a general level:

• Acupuncture for nausea/vomiting has been studied most robustly at points like P6, but the broader body of evidence suggests neuromodulatory effects relevant to nausea pathways; you can explore summaries through PubMed’s acupuncture research database.
• Respiratory symptom modulation (dyspnea, asthma-related quality of life) has been explored in acupuncture literature with mixed results depending on condition and study design; an overview starting point is the World Health Organization’s acupuncture evidence resources (quality varies by indication).

Clinically, I treat BL-17 as a pattern-based supportive point: useful when the presentation matches diaphragm constraint or blood disharmony—while staying transparent that modern evidence is not point-specific here.