Collapse of Yang

Understanding Collapse of Yang

Yang is described as the body's warmth and driving force. In collapse, it does not merely decline; it escapes outward, taking the body's warmth with it. The sweat that comes is cold, which is the sign that warming Yang is leaving.

The hands and feet are ice-cold, the face is ashen or pale, and the sweat is profuse and cold. The pulse is barely palpable, and breathing may be shallow.

The tongue is pale, moist and flaccid with a thin white slippery coat. The whole picture is quiet, unlike the restless heat of Yin collapse.

It follows prolonged Yang deficiency reaching a critical point, overwhelming Cold, severe loss of blood or fluid, or excessive sweating or purging.

This is a medical emergency. The traditional description is for understanding only; treatment requires hospital care, and moxibustion may be used as supportive care while awaiting help.

Signs and symptoms

Key signs

• Profuse cold sweating
• Ice-cold hands and feet
• Extremely faint or absent pulse
• Ashen-white or pale face

Also seen

• Shallow or slow breathing
• Apathy or confusion
• Cold sweat on the forehead
• A faint presence or absence of voice
• A pale, moist, flaccid tongue

Variations

• A sinking feeling in the chest
• Barely perceptible pulse at the wrist
• Drop in urine output

Timing

• It develops over minutes to hours.
• It does not recover without urgent treatment.

Practitioner notes

• The tongue is pale, moist and flaccid with a thin white slippery coat.
• The pulse is extremely faint or absent, not merely weak. This is a medical emergency sign.
• The distinction from collapse of Yin is temperature and quality: Yang collapse is cold and still, Yin collapse is hot and restless.
• Any suspicion of this pattern is a reason to call emergency services immediately.

Causes

Common causes

• Prolonged Yang deficiency reaching a critical point
• Overwhelming Cold attacking the core
• Severe loss of blood or fluids causing Yang to escape
• Excessive sweating or purging from treatment

How it develops

• It develops acutely and is rapidly progressive.
• It may follow collapse of Yin as the final stage of depletion.

Diagnosis

Diagnosis rests on cold collapse with an almost absent pulse. In practice it is concurrent with emergency assessment.

Tongue

• Body: Pale, moist and flaccid.
• Coating: Thin white and slippery.
• Note: A red dry tongue would indicate Yin collapse instead.

Pulse

Extremely faint, Absent, Slow

An absent pulse at the wrist is a critical emergency sign.

Observation

• Ashen-white face
• Cold sweat
• Cold limbs
• Reduced consciousness

Listening

• Shallow breathing
• A very weak or absent voice

Palpation

• Abdomen: Cool or cold to the touch.
• Channels: The limbs are ice-cold; the pulse may only be felt faintly at the femoral or carotid level, which is a medical sign.

Questions that separate it from look-alikes

• How much fluid or blood has been lost?
• When did the coldness and sweating begin?
• Is the person conscious and breathing?
• Any recent excessive vomiting, diarrhoea or sweating?

Treatment

Principles

• Emergency medical care immediately
• Restore Yang and warm the body as supportive traditional care
• Stop further loss of fluids
• Moxibustion may be used as supportive care while awaiting help

Herbs

Formulas

• Si Ni Tang - The reference formula for cold limbs from Yang collapse; requires urgent professional prescribing.
• Shen Fu Tang - For Yang collapse with severe Qi deficiency, a classical emergency formula.
• Hui Yang Jiu Ji Tang - For collapse with Yang nearly lost, used in the classical emergency setting.
• Dang Gui Si Ni Tang - For cold limbs from Blood deficiency rather than collapse, which is a different and less severe picture.
• Si Ni Jia Ren Shen Tang - For cold limbs with severe Qi deficiency.

Acupoints

• REN-6 (Qihai) - Warms the lower abdomen; moxibustion here is classical first aid while help is on the way.
• DU-4 (Mingmen) - The Gate of Vitality point, used with moxibustion to restore Yang.
• ST-36 (Zusanli) - Supports the middle and energy, supportive care after stabilisation.

Personalising the plan

• The acute phase is managed in hospital; traditional treatment is supportive while awaiting care.
• If the picture warms and the pulse returns, the treatment has begun to stabilise the situation.
• Herbs are given under professional supervision only, and never instead of emergency care.
• Recovery after the crisis uses gentle warming and tonification.

Self-care

Diet

• Warm drinks in small sips if the person is conscious and able to swallow
• Nothing by mouth if unconscious or unable to swallow safely
• In recovery, warm cooked food

Lifestyle

• Call emergency services immediately
• Keep the person warm with blankets
• Do not leave the person alone
• Do not delay care to try home measures

Qigong and movement

• Not applicable during the acute phase.

How it differs from look-alikes

Patterns that can be mistaken for collapse of yang, and the contrast that separates them.

Where it appears

Skin conditions in which this pattern is commonly seen.

Safety and when to get help

For anything severe, sudden or spreading quickly, read when a skin problem needs urgent care.

This page describes a TCM pattern, not a diagnosis, and a pattern can accompany more than one skin condition. Get urgent medical help for a rash with fever, confusion or feeling very unwell; skin that is blistering, peeling or spreading quickly; swelling of the face, lips or throat, or difficulty breathing; or a lesion with increasing pain, warmth, red streaks or pus. For anything persistent, severe or changing, have it assessed by a clinician before treating it yourself.

Read the skin condition pages for the red flags that belong to a specific presentation.

Urgent-sign guidance is based on standard sources: NHS anaphylaxis, NHS cellulitis, NHS Stevens-Johnson syndrome, NHS melanoma.

Evidence note

No controlled trial of this treatment in skin conditions was identified for this entry. What is described here rests on the classical and later materia medica record and on traditional clinical use, not on controlled trial evidence, and it is not a prediction of benefit. Where skin-specific research does exist it is linked above.

Related patterns