Jade Health Life 玉衡針灸 Book Appointment Hours & Directions

Registered Acupuncturist in Downtown Vancouver

Irregular Menstruation: Xuehai (SP10) and Dai Mai (GB26)

Irregular Menstruation: Xuehai (SP10) and Daimai (GB26)
Blood-Level Regulation and Lower Abdominal Stability｜An Integrative View from Classical Theory to Modern Research
Why are Xuehai (SP10) and Daimai (GB26) commonly used to support menstrual regularity?
Irregular menstrual cycles, fluctuating menstrual volume, or cycles that arrive earlier or later than expected often reflect an imbalance between blood generation and circulation and the mechanisms that stabilize the lower abdomen. In acupuncture practice, Xuehai (SP10) is regarded as a key blood-level point, primarily addressing the quality and movement of blood, while the Daimai (GB26) acupoint is used to support restraint and stability of the lower abdominal and pelvic region. When used together, these two points are commonly selected to help establish a more stable and predictable menstrual rhythm.
1. Menstrual regulation involves more than the uterus
In traditional Chinese medicine, menstrual regularity is understood as the result of coordinated systemic regulation rather than the function of a single organ. Clinical assessment commonly considers:
  • Blood generation and circulation: Adequate and smoothly moving blood supports regular cycles, while stagnation may lead to pain or irregularity.
  • Qi movement and containment: Qi drives blood circulation; insufficient containment may result in unstable timing or volume.
  • Meridional patency and restraint: Smooth meridian flow prevents stagnation, while proper restraint supports rhythmic stability.
2. Xuehai (SP10): a representative blood-level point
Xuehai (SP10) is traditionally indicated for blood-related gynecological conditions such as irregular menstruation, excessive bleeding, or prolonged spotting. In modern clinical contexts, it is commonly included when menstrual flow is inconsistent, dark or clotted blood is present, or lower abdominal fullness accompanies menstruation. Rather than acting solely to tonify or restrain, Xuehai is typically used to restore blood dynamics to a more balanced and functional range.
Note: Point selection, needling technique, and combinations are adjusted according to individual constitution and cycle phase.
3. Daimai (GB26): a point for restraint and lower abdominal stability
Daimai (GB26) is a point on the Gallbladder meridian and a confluent point of the Dai Mai extraordinary vessel. Located on the lateral abdomen, it is clinically used to support stability of the lower abdomen and pelvic region. Daimai (GB26) is often selected in cases of menstrual irregularity accompanied by a sensation of heaviness, lower abdominal tension, prolonged bleeding, or cyclical instability that persists despite blood-level regulation alone.
4. Why combine Xuehai (SP10) and Daimai (GB26)?
This pairing can be summarized as: blood must circulate smoothly, and it must also be properly restrained.
Xuehai (SP10) focuses on blood quality and movement, while Daimai (GB26) supports containment and structural stability of the lower abdomen. Together, they are frequently used when menstrual timing or volume fluctuates, or when symptoms tend to recur despite prior regulation.
Frequently asked question: Can Xuehai (SP10) and Daimai (GB26) be used during menstruation?
In many cases, yes—with appropriate assessment and technique. Menstruation itself is not an absolute contraindication. The decision to use Xuehai (SP10) and Daimai (GB26) depends on menstrual volume, accompanying symptoms, and the individual’s overall condition at that time.
Situations where gentle treatment may be appropriate
  • Lower abdominal fullness or pressure during menstruation
  • Dark-colored menstrual blood or clotting
  • Prolonged or lingering menstrual flow
  • Heaviness or tension in the lower abdomen or lower back
Clinical emphasis is placed on gentle modulation rather than strong stimulation or inducing flow.
Situations requiring caution or postponement
  • Very heavy or bright-red bleeding
  • Dizziness, marked fatigue, or known anemia
  • Severe pain or suspected gynecological pathology not yet evaluated
Treatment frequency: a commonly used cycle-based approach
Menstrual regulation is typically assessed over two to three consecutive cycles. A commonly used, conservative scheduling framework includes:
Pre-menstrual phase
Once weekly｜Focus: stabilizing rhythm and reducing recurrence
During menstruation
Up to one session if needed｜Gentle modulation
Post-menstrual or mid-cycle phase
Once weekly｜Support recovery and preparation for the next cycle
Clinical note
Irregular menstruation may arise from multiple factors, including stress, lifestyle changes, hormonal influences, medications, or underlying gynecological conditions. If bleeding becomes suddenly excessive, pain is severe or persistent, or symptoms such as dizziness occur, medical evaluation is recommended. Acupuncture may be used as a complementary approach following assessment by a qualified practitioner, alongside appropriate medical care when indicated.
Extended academic reading｜Classical sources and modern research
Classical references (summary)
Classical texts repeatedly describe Xuehai (SP10) for irregular menstruation and abnormal uterine bleeding, often in connection with the Spleen’s role in governing blood. Daimai (GB26) is traditionally associated with restraint and stabilization of the lower abdomen, supporting rhythmic regulation when menstrual patterns are unstable.
Modern research (selected)
This article is for educational purposes only and does not constitute individual medical diagnosis or treatment advice.

Leave a comment