BL4 (Qucha, “Qucha”) is an acupuncture point on the Bladder Meridian. It is located on the head, 1.5 cun lateral to the anterior midline, located 0.5 cun posterior to the anterior hairline. This places it 1.5 cun lateral to the point Shenting (GV24). It expels wind, clears the head and eyes, alleviates pain, and opens the nasal passages.
On the head, 1.5 cun lateral to the anterior midline, located 0.5 cun posterior to the anterior hairline. This places it 1.5 cun lateral to the point Shenting (GV24).
Transverse (subcutaneous) insertion, 0.3 to 0.5 cun, often directed posteriorly along the scalp.
Expels wind, clears the head and eyes, alleviates pain, and opens the nasal passages.
Headache, vertex pain, head swelling, body heat, inability to sweat, heart vexation and fullness, nasal congestion, nosebleed, nasal sores, unclear vision, dizziness, neck swelling, epilepsy, convulsions.
Qucha is a primary local point for frontal and vertex headaches, particularly when associated with nasal symptoms like congestion or discharge. Its ability to clear wind and heat makes it useful for the early stages of external invasions presenting with fever, headache, and an absence of sweating. Clinically, it is often combined with other local and distal points to address sinus pressure, rhinitis, and eye-related issues stemming from wind-heat.
Classical text; the translation was prepared with AI and is not clinical advice.
《針方六集》 Zhēnfāng Liùjí — Six Collections on Needling, Wu Kun, 1618 · 卷之五·紛署集 · 頭直鼻中髮際旁行至頭維凡七穴第一 · Source: jicheng.tw ↗
曲差二穴，治雷頭風，頭疼，身熱汗不出，眼視不明，鼽衄，鼻塞，鼻瘡，頂腫，心煩The text records that BL4 was used for "thunder head-wind", headache, fever without sweating, dim vision, nasal discharge and nosebleed, nasal congestion, nasal sores, swelling at the vertex and vexation.
《針灸甲乙經》 Zhēnjiǔ Jiǎyǐ Jīng — Systematic Classic of Acupuncture & Moxibustion, c. 256–282 · 卷03 · Source: Wikisource ↗
曲差，一名鼻沖，俠神庭兩傍各一寸五分，在髮際，足太陽脈氣所發，正頭取之，刺入三分，灸五壯It is located 1.5 cun on each side of Shenting at the hairline, according to this text, where the foot taiyang qi emerges, found with the head held straight; BL4, also called Bichong, is needled 3 fen with 5 moxa cones.
《普濟方·針灸門》 Pǔjì Fāng · Zhēnjiǔ Mén — Formulas for Universal Relief: Acupuncture & Moxibustion Section, Zhu Su, 1406 · 卷四百十三 · 針灸門 · 膀胱 · Source: jicheng.tw ↗
曲差（一名鼻沖。 俠神庭一寸半。 在髮際足太陽脈氣所發。 正頭取之。 灸五壯。 主頭痛身熱鼻窒The text records that BL4, also called Bichong, 1.5 cun beside Shenting at the hairline, was moxibusted with 5 cones for headache, fever and blocked nose.
《針灸逢源》 Zhēnjiǔ Féngyuán — Sources of Acupuncture & Moxibustion, Li Xuechuan, 1815 · 卷四 · 經穴考正 · 足太陽膀胱經穴考 · Source: jicheng.tw ↗
曲差（一名鼻沖） 在神庭旁一寸五分入髮際（針二分。 灸三壯）治目不明According to this text, BL4 (also called Bichong) lies 1.5 cun beside Shenting within the hairline; it is needled 2 fen with 3 moxa cones and was used for dim vision.
BL4 is one of 67 points on the Bladder Meridian. Nearby points:
BL4 (Qucha) is located on the head, 1.5 cun lateral to the anterior midline, located 0.5 cun posterior to the anterior hairline. This places it 1.5 cun lateral to the point Shenting (GV24).
BL4 expels wind, clears the head and eyes, alleviates pain, and opens the nasal passages. Common clinical indications include headache, vertex pain, head swelling, body heat, inability to sweat, heart vexation and fullness, nasal congestion, nosebleed, nasal sores, unclear vision, dizziness, neck swelling, epilepsy, convulsions.
Transverse (subcutaneous) insertion, 0.3 to 0.5 cun, often directed posteriorly along the scalp.
BL4 is a point on the Bladder Meridian (Zú Tài Yáng Páng Guāng Jīng).