曲差 Qucha
“Winding Deviation” · BL4
Foot Taiyang · 4 of 67
Where. Half a thumb-width inside the front hairline, two finger-widths out from the centre line.
For. Headache; dizziness; a blocked nose.
Press. Small circles with two fingertips, about a minute each side.
曲差，一名鼻沖，俠神庭兩傍各一寸五分，在髮際按 · Press with me
Six slow breaths
About a minute. Press as you breathe out, ease as you breathe in.
鄰 · Neighbouring leaves
Where Qucha Sits on the Forehead
On the forehead, Qucha occupies a quiet station most people have never noticed, though they pass near it every time they brush their hair back. The dataset places it on the head, half a cun above the midpoint of the anterior hairline and one and a half cun lateral to it, at the junction of the inner and middle thirds of the line from Shenting (GV24) to Touwei (ST8). A cun is the traditional measuring unit of Chinese point-location: proportional lengths taken from the person being examined rather than from a ruler, with one cun classically approximated by the width of your own thumb at its knuckle. Because the yardstick lives on the body, the same written measurement lands slightly differently on a broad brow and a narrow one, and the point always answers to the forehead it sits on.
Two anchors make the coordinate readable. Shenting (GV24) stands on the very midline of the forehead, half a cun directly above the centre of the front hairline; Touwei (ST8) waits far out at the temple corner of the hairline, four and a half cun from the midline, keeping the same half-cun height. The line joining them therefore runs level across the top of the forehead — a shelf rather than a slope — and the dataset sets Qucha where the inner third of that shelf meets the middle third, one third of the way out from the midline. Under the fingertip the terrain is plain: forehead skin over thin muscle, and beneath that the firm, close feel of the frontal bone. Nothing about the spot asks for force; hairlines themselves vary enormously — high, low, receding at the corners — so the relationships between points matter more than any absolute height.
Neighbours turn the address into a street map. The bladder channel arrives at the inner corner of the eye — Jingming (BL1), whose record centres on the eyes — then climbs the face: Cuanzhu (BL2) rests in the small depression at the medial end of the eyebrow, Meichong (BL3) rises directly above it into the hairline, recorded between Shenting and Qucha, and Qucha follows at the one-and-a-half-cun mark. Directly above Qucha, half a thumb-width deeper into the hair, sits Wuchu (BL5). Reading the row this way does more than confirm the location: it shows the channel marching outward along the hairline in orderly stations, each answering to the ones before and after it. Lose confidence mid-search and any neighbour will re-anchor you.
A Self-Palpation Walkthrough
Sit before a mirror in good light, hands washed, fingers warm, loose hair pinned back so strands cannot confuse the border. First establish the centre: run an index finger from between the eyebrows straight up the middle of the forehead until it meets the front hairline — that meeting point is the midpoint the location names. Rise half a thumb-width straight up from it: you are now at Shenting’s height on the midline. Next walk outward along the level line toward the temple corner of the hairline, laying down your own thumb edge to edge one and a half times, or — more forgiving still — divide the whole span to the corner into three equal parts and pause at the end of the first third. The fingertip settles at the junction of the inner and middle thirds: Qucha’s address.
A few quiet confirmations help before any pressing begins. Touch feather-light and compare sides: many people notice a faint dull awareness or mild tenderness at true channel points on the head and much less a thumb-width away. Run the level test: slide the finger horizontally inward and check that the path stays level with Shenting, neither climbing nor descending. Then the stack test: half a thumb-width straight above the found spot, Wuchu should be waiting; if the hair makes that hard to judge, simply confirm the spot keeps its place — one third of the way out — between the two anchors. Repeat the whole search on the other side unhurriedly, so the mirrored point receives the same attention; symmetry is itself a check, since the pair should sit at matching heights and distances.
Common slips have simple fixes. The first is wandering backward off the level line onto the crown-ward scalp — the vague sense of “somewhere above the forehead” is not the address; return to Shenting and restart the outward walk. The second is trusting a receding or uneven hairline too literally; when the border confuses, lean on proportions and the two anchors instead, dividing the span into thirds by eye and fingertip together. The third is stopping at the hair’s edge rather than rising the half-thumb above hairline level, easy to do when a fringe is in the way. None of this wants speed: two calm minutes usually find the point more surely than ten impatient ones, and once one side is learned the other comes quickly.
Reading the Name: Winding Deviation
The name arrives in two characters. Qu 曲 means bent, crooked, winding — the same character that lends Quchi (LI11), the pool at the crooked elbow, its first syllable; it pictures something folded away from straightness. Cha 差, in its commonest reading, names a difference, a discrepancy, a divergence — one thing held apart from another. Read plainly, Qucha suggests a bending divergence: a place where the straight thing gives way and parts company with itself. It is a geometric little name, less romantic than courtyards and treasuries, and precisely suited to a station defined by its position along a measured line between two landmarks.
Why “bent”, though, on a forehead famous for being level? Classical commentators offered more than one reading, and honesty favours presenting them as readings. Some point to the channel’s own behaviour: the bladder pathway arrives at the inner corner of the eye and climbs the face close to the central territory, then its forehead row angles outward toward the temple — a visible deviation from straightness at just this stretch. Others look to the hairline itself, which winds outward in a curve at either corner, so the point stands where straight meets winding. Later readers hear the divergence of the measured line into thirds. Each account turns the same observation — an outward turning — into a name; the tradition preserved the geometry and let the poetry stay plural.
Pinyin renders the name Qūchā, with a level first tone on qu and a level first tone on cha. Cha is one of Chinese script’s famous polyphonic characters: dictionaries also record a falling tone meaning below standard, chāi meaning to dispatch, and cī in the old compound cēncī, uneven — the point name takes the flat first-tone divergence reading the dataset writes. The hanzi pair 曲差 is spare enough to memorise at a glance. Names like this reward slow reading: they record how the tradition thought of the body as measured ground, where a point’s identity could hang on a fraction and a direction, and the name itself becomes a small set of instructions — leave the midline, follow the bend.
Traditional Indications, Explained
The dataset records five traditional indications: headache, dizziness, nasal congestion, nosebleed, and conjunctivitis. Take them as the tradition filed them. Headache leads the list, and the classical reasoning is the simplest on offer: the bladder channel sweeps over the head — it begins at the inner corner of the eye and crosses the crown before descending the whole length of the back — so complaints of the head were read against stations along its route, and this forehead row stood nearest the front-of-head territory where much discomfort gathers. Dizziness kept company with headache in the old records wherever pressure, wind, or rising commotion was imagined disturbing the clear upper region; head points generally, and points of this channel specifically, were gathered into such conversations.
The nasal and eye indications travel the channel map too. A point standing at the inner corner of the eye opens the channel — Jingming’s record is almost entirely about the eyes — and classical practice carried eye complaints along the pathway’s earliest stations. The nose enters because the forehead row flanks the territory directly above the bridge of the nose, and because the neighbouring stations carry matching records: Cuanzhu lists nasal congestion, Meichong adds nosebleed alongside it, and Qucha joins them with congestion and nosebleed both. Grouped this way, the row reads less like scattered claims and more like one traditional conversation about the head and its openings, conducted at the stations nearest the top. Conjunctivitis — the red, irritated eye — belongs in that same conversation through the channel’s beginning, not through anything special about this one point.
It bears repeating without varnish: these are the traditional uses recorded in a licensed dataset and discussed in classical literature, offered for cultural and historical understanding. They are not claims that pressing this point treats disease, and nothing here replaces assessment by a qualified clinician. Where modern research touches self-applied pressure at all, reviews suggest effects are modest and heavily dependent on context, and evidence gathered around any single point remains thin. And some headlines outrank the whole topic: a sudden headache unlike any before it, headache with fever and a stiff neck, headache after a blow to the head, or headache arriving with disturbed vision, weakness, or confusion belongs in prompt medical care — never in a self-care routine.
Self-Care Acupressure at Home
With the point located by the walkthrough above, set up comfortably: seated, shoulders heavy, brow deliberately softened, because knitted tension hides exactly the sensations worth noticing. Rest the pads of your index and middle fingers — never the tips, never a knuckle — on the spot. Begin with plain contact for a few slow breaths, then add small, patient circles, letting the skin travel over the tissue beneath rather than dragging against it. Aim for a pleasant spreading dullness or mild warmth; anything sharper means lighten off. A common home rhythm is one to three minutes per side, once or twice daily, matched to slow exhales so each circle rides the breath out, then repeated mirrored on the other side.
Quality outweighs duration everywhere in this practice. Light, regular, well-aimed contact is the entire method; hard rubbing buys soreness and teaches nothing, and the thin skin of the forehead marks and complains sooner than sturdier territory. Small preparations repay themselves: freshly washed hands, since the hairline gathers oils and dust through the day; dry warmth in cold weather, because chilled fingers press clumsily; hair pinned clear so strands do not interrupt mid-practice. People who keep the habit usually anchor it to something existing — the morning wash, an afternoon pause, the moment of taking off glasses at day’s end — because consistency, not intensity, is what self-care traditions actually request, and anchored habits survive weeks that resolutions alone do not.
Treat the exercise as a short ceremony of attention rather than a treatment session. Over weeks you may notice the brow feeling less knotted, or breathing easier while you press, or nothing measurable at all except that you spent two minutes looking after yourself. Every one of those outcomes fits the honest scope of self-acupressure. What does not fit is escalation — pressing harder, longer, or more often to force a result, or continuing through pain out of stubbornness. When curiosity pulls that way, return to gentleness, or set the practice down for the day; the point stays put, one third of the way along the shelf above your brows, exactly where the map left it.
Cautions and Safe Practice
Start with the record itself: the licensed dataset registers no special cautions for this point, and this module echoes that empty list faithfully. But no caution recorded is not the same as no limits existing. The general rules governing all self-directed acupressure apply here in full, and the forehead setting adds courtesies of its own: the skin here is thin and expressive, quick to mark, often dressed with creams or sunscreen that broken skin would resent, and the hairline collects the day’s grime. Clean hands and a light hand answer all of it.
Practical boundaries, plainly stated. Keep contact light and strictly at the surface; finger pads only, no tools, devices, elbows or knuckles. Skip the point entirely over broken, irritated, sunburnt or recently treated skin, during any acute illness, and whenever the head simply feels wrong to press — a feverish headache, say, wants rest and assessment, not circles. Stop at once on sharp, electric or radiating sensation, and leave the point alone for the rest of the day. Anyone pregnant, or living with a condition affecting circulation or the nerves of the head and face, should ask a qualified practitioner before adding new point work; the same invitation extends to anyone unsure whether their situation suits self-care at all.
And the wider frame stands over everything. This page is educational; acupressure is self-care, not diagnosis and not therapy. Seek proper medical care — not a longer pressing session — for headaches that persist or steadily worsen, for nosebleeds that recur, follow an injury, or prove hard to stop, and for red, painful or discharging eyes or any change in vision, all of which belong with a licensed practitioner promptly. Persistent complaints deserve professional assessment, Western or East Asian medical as the complaint suggests. The safest gift this modest station offers most people is a better acquaintance with their own forehead and its tidy geometry, treated kindly and kept within bounds.
Qucha, the Winding Deviation, stands high on the forehead, half a thumb-width above the front hairline and a thumb and a half out from the midline, where the bladder channel’s first row climbs away from the centre line. Classical practice reached for it when headache, dizziness, or a blocked nose clouded the day. This guide walks you to it by touch, then shows how to press it gently and safely.
Self-care limits
Frequently asked
- How do I find Qucha without knowing anything about cun?
- Use the hairline and the two anchors as the whole map. Trace the vertical centreline of your forehead up from between the eyebrows to the front hairline, rise half a thumb-width, then walk outward along the level line toward the temple corner until you have covered about a third of the span. That corner-side third-mark, level with Shenting, is the location the dataset describes. Cun measurements encode the identical sequence proportionally.
- Is it safe to press this point on myself?
- For healthy adults, gentle surface pressure with the finger pads is generally reasonable self-care here, and the dataset records no special cautions for the point. Reasonable is not unlimited: keep it light, skip broken or irritated skin, avoid pressing during feverish illness, and treat sharp or radiating sensation as an immediate stop signal. Persistent or worsening symptoms go to a professional, not to a firmer fingertip.
- What did classical practice use Qucha for?
- The traditional record lists headache, dizziness, nasal congestion, nosebleed, and conjunctivitis. Channel logic ties them together: the bladder pathway starts at the inner corner of the eye, crosses the head, and runs the length of the body, so its forehead stations entered classical discussions of the head and its openings. These are traditional frameworks recorded for context, not modern treatment claims.
- Why would a forehead point appear in discussions of the nose and eyes?
- Because of where the channel begins and how the row is grouped. The bladder channel surfaces at the inner corner of the eye, and its first stations climb the face past the brow into the hairline; neighbouring points carry matching nasal records. Within traditional geography, complaints of the head and its openings were read alongside the stations nearest their territory — interesting as history, unproven as mechanism.
- When should I stop self-care and see a practitioner instead?
- Promptly, for any sudden headache unlike previous ones, headache with fever or a stiff neck, headache after a head injury, or headache with vision change, weakness, or confusion — those need medical care, not massage. Give the same promptness to recurring nosebleeds and to red, painful or discharging eyes. Self-acupressure is a comfort practice layered on ordinary good sense; it never replaces diagnosis.
Sources
- 01WHO Standard Acupuncture Point Locations in the Western Pacific Region (2008), World Health Organization — nomenclature conventions.
- 02A Manual of Acupuncture, Peter Deadman, Mazin Al-Khafaji and Kevin Baker — point-name tradition and channel context.
- 03aijiu-mpvue (MIT License) licensed dataset, entry for BL4 Qucha — location, actions, and indication record.
Last reviewed
牌記This leaf, for machines
Old books ended with a colophon saying who printed them. Every leaf here carries the same facts as structured data for agents and search, with no layout in the way.
- GET /en/points/bl4/leaf.json
- GET /zh-hant/points/bl4/leaf.json
- GET /zh-cn/points/bl4/leaf.json
- /llms.txt — the index of every leaf
- JSON-LD in the page: MedicalWebPage, MedicalEntity and FAQPage
{
"id": "BL4",
"name": {
"en": "Qucha",
"gloss": "Winding Deviation",
"zh-Hant": "曲差",
"zh-Hans": "曲差"
},
"channel": {
"id": "BL",
"order": 4,
"of": 67
},
"location": {
"text": "Half a thumb-width inside the front hairline, two finger-widths out from the centre line."
},
"for": [
"headache",
"dizziness",
"a blocked nose"
],
"press": {
"text": "Small circles with two fingertips, about a minute each side.",
"seconds": 60,
"sides": "both"
},
"cautions": [],
"source": "Zhenjiu Jiayi Jing, book 3",
"url": "https://acupoints.com/en/points/bl4",
"lastReviewed": "2026-08-25"
}