# BL42 Pohu (Door Of The Corporeal Soul) – Bladder Meridian

魄戶 · pò hù

Location: 3 thumb widths lateral to the du mai at the level of the lower border of the spinous process of the 3rd thoracic vertebra on the spinal border of the scapula.

Cautions: Avoid deep perpendicular needling due to risk of pneumothorax.

Canonical page: https://acuiq.com/points/bl42

## Indications

An indication list is a reference index, not a prescription – see the protocols below for sourced treatments.

Agitation, Asthma, Atrophy Lung, Atrophy Lung, Aversion Cold, Aversion Cold, Benefit Tonify Lung, Common Cold, Common Cold, Cough, Cough Taxation, Cough Taxation, Shortness of Breath, Enteritis, Fever, Fullness, Ghost Syndrome Three Corpse Possession, Ghost Syndrome Three Corpse Possession, Heat, Hemiplegia, High Blood Pressure, High Blood Pressure, Stiff Neck, Immobility Neck, Nourish Lung, Nourish Lung, Foot Numbness, Foot Numbness, Hand Numbness, Hand Numbness, Pain, Back Pain, Back Pain, Lower Back Pain, Lower Back Pain, Chest Pain, Chest Pain, Headache, Headache, Shoulder Blade Pain, Shoulder Blade Pain, Shoulder Pain, Shoulder Pain, Stomach Ache, Stomach Ache, Channel Stagnation, Channel Stagnation, Organs Phase Stagnation, Organs Phase Stagnation, Deficiency Taxation Syndrome, Deficiency-taxation Syndrome, Tonify Lung, Tuberculosis Pulmonary, Tuberculosis Pulmonary, Loss of Consciousness, Vomiting, Wind Organs Phase, Wind Organs Phase

## Most often selected alongside BL42

Sourced protocols in the index pairing each point with this one. Corpus frequency, not a combination to use.

- BL13 (Lung Shu Point) – 4 protocols
- BL10 (Celestial Pillar) – 3 protocols
- GB21 (Shoulder Well) – 3 protocols
- SI14 (Outer Shoulder Point) – 3 protocols
- BL17 (Diaphragm Shu Point) – 2 protocols
- BL19 (Gallbladder Shu Point) – 2 protocols
- BL46 (Diaphragm Gate) – 2 protocols
- BL48 (Yang Headrope) – 2 protocols

## Protocols using BL42

| Symptoms | Points | Course | Source | Kind | Caveat |
|---|---|---|---|---|---|
| Stiffness Neck, Stiffness Shoulder | SI14, BL10, BL42, GB21 | 1 days | doi:10.1186/1472-6882-14-246 | trial | Point selection reported in a published study. |
| Stiffness Neck, Stiffness Shoulder, Neck Chronic Pain | SI14, BL10, BL42, GB21 | 1 days | doi:10.3390/medicina59122141 | trial | Point selection reported in a published study. |
| Fatigue, Anxiety, Insomnia, Cognitive Impairment, Depression Major, Mood Dysphoric | LI04, ST08, SP06, BL13, BL17, BL19, BL42, BL46, BL48, KD01, LV03, CV06, CV12, CV15, GV20, XH03 | 84 days | doi:10.3389/fmed.2022.761419 | trial | Point selection reported in a published study. |
| Depression, Acute Depressive Disorder | BL13, BL17, BL19, BL42, BL46, BL48, KD01 | – | doi:10.2147/NDT.S601078 | trial | Point selection reported in a published study. |
| Neck Pain, Stiffness Neck, Stiffness Shoulder, Neck Chronic Pain | SI14, BL10, BL42, GB21 | – | doi:10.3390/medicina59122141 | trial | Point selection reported in a published study. |
| Sadness | LU07, BL13, BL42, CV17 | 7 days | Deadman, Al-Khafaji & Baker, A Manual of Acupuncture – point group actions | text | Point selection recorded in a clinical text or case report. |
| Lung Qi Deficiency, Lung Qi Deficiency | LU01, LU02, LU09, LI20, ST14, ST15, ST36, SI11, BL13, BL42, XB02T6 | 7 days | Yang Yong-Xuan, clinical point-selection notes | text | Point selection recorded in a clinical text or case report. |

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AcuiQ-authored prose (symptom and meridian descriptions, the wiki, the auricular crosswalk) is licensed CC-BY-4.0: https://creativecommons.org/licenses/by/4.0/. The assembled protocol compilation is not: build on it with attribution, but do not redistribute it whole as a dataset – https://acuiq.com/terms. The underlying findings are the cited sources' claims – each entry carries its citation; verify against the source before relying on it. Not medical advice: https://acuiq.com/terms