TCM pattern

Heat in Pericardium

热入心包 rè rù xīn bāo

9Herbs
5Formulas
3Acupoints
1Conditions
4Differentials
Excess, criticalPattern of DisharmonyPericardiumHeartAcute, emergency

Understanding Heat in Pericardium

The Pericardium is described as the outer defence of the Heart, and as the place where Heat enters when it threatens the Heart itself. Because the Heart houses the spirit, this pattern disturbs consciousness directly.

The fever is high and the mind is clouded: the person may be delirious, incoherent, or unable to speak. This is not simple agitation; it is a disturbance of consciousness.

The tongue is crimson and stiff or shortened with a yellow dry coat, or little coat at all. The pulse is rapid and often fine or thready.

It follows a warm-Heat pathogen that has gone deep, pre-existing Phlegm that has combined with the Heat, incorrect warming treatment that drove the pathogen inward, or epidemic illness.

This is a medical emergency. The classical formulas for this pattern include some of the most potent in the materia medica, and they belong to hospital care, not to self-treatment.


Signs and symptoms

Key signs

  • High fever
  • Loss of consciousness or delirium
  • Incoherent speech or inability to speak
  • Deep crimson tongue

Also seen

  • Restlessness that progresses to stupor
  • Cold hands and feet with a hot body
  • A stiff neck
  • A rapid thready pulse
  • Convulsions in severe cases

Variations

  • Muttering delirium
  • Inability to recognise people
  • Sudden collapse

Worse with

  • Night-time and evening hours
  • Inappropriate warming or sweating treatment
  • Any delay in treatment

Better with

  • Immediate medical treatment
  • Cooling measures while awaiting care
  • Opening the orifices with classical aromatic medicines under supervision

Timing

  • It develops over hours in a severe febrile illness.
  • It is rapidly progressive and life-threatening if untreated.

Practitioner notes

  • The tongue is crimson and stiff or shortened, with a yellow dry coat or almost none.
  • The pulse is rapid and often thready: a weak rapid pulse in this setting is a warning sign.
  • The distinction from Heart Fire blazing is consciousness: Fire gives insomnia and agitation, this gives delirium and loss of consciousness.
  • The distinction from Phlegm-Fire harassing the Pericardium is subtle and largely clinical; both are emergencies and both need hospital care.

Causes

Common causes

  • A warm-Heat pathogen entering deeply
  • Pre-existing Phlegm combining with invading Heat
  • Incorrect treatment driving Heat deeper
  • Epidemic or pestilential illness

How it develops

  • It progresses rapidly from a severe febrile illness.
  • Without treatment it can lead to collapse of Yin or Yang.

Diagnosis

Diagnosis rests on fever with an altered mental state and a crimson tongue, alongside emergency assessment.

Tongue

  • Body: Crimson, stiff or shortened.
  • Coating: Yellow and dry or almost none.
  • Note: A pale tongue would rule this out entirely.

Pulse

Rapid, Thready, Fine

A thready rapid pulse in a febrile patient is a critical sign.

Observation

  • Flushed face
  • Clouded consciousness
  • Restlessness or stupor

Listening

  • Incoherent or muttered speech

Palpation

  • Abdomen: May be hot and tense.
  • Channels: The body is hot; the extremities may become cold, which is a warning of collapse.

Questions that separate it from look-alikes

  • When did the confusion begin?
  • How high is the fever, and for how long?
  • Is the person responsive?
  • Any convulsion or difficulty breathing?

Treatment

Principles

  • Emergency medical care immediately
  • Clear the Pericardium and open the orifices as supportive traditional care
  • Cool the Blood
  • Prevent collapse

Herbs

Formulas

  • Qing Ying Tang - For Heat entering the nutritive level with fever at night and restlessness.
  • Qing Gong Tang - For Heat in the Pericardium with clouded consciousness, opening the orifices.
  • An Gong Niu Huang Wan - The classical formula for Heat in the Pericardium with delirium; hospital use only.
  • Zhi Bao Dan - For Heat with Phlegm obstructing the orifices, used in emergencies under supervision.
  • Zi Xue Dan - For extreme Heat with convulsion and loss of consciousness; hospital use only.

Acupoints

  • Neiguan PC-6 - A point the reference selects for this pattern.
  • Quchi LI-11 - A point the reference selects for this pattern.
  • Shixuan EX-UE-11 - A point the reference selects for this pattern.

Personalising the plan

  • The acute phase is managed in hospital.
  • If the limbs turn cold, collapse is developing and the priority is resuscitation.
  • Convulsions are treated medically.
  • Recovery care is gentle nourishment once consciousness and temperature are stable.

Self-care

Diet

  • Nothing by mouth unless medically advised
  • Cooling fluids only if conscious and permitted
  • Recovery uses light moistening food

Lifestyle

  • Call emergency services immediately
  • Do not delay care to try any home measure
  • Keep the person safe if confused and do not leave them alone
  • Note the time the confusion began

Qigong and movement

  • Not applicable during the acute phase.

How it differs from look-alikes

Patterns that can be mistaken for heat in pericardium, and the contrast that separates them.

Phlegm Fire harassing the Pericardium

Both disturb consciousness, but Phlegm-Heat Misting the Pericardium gives a clouded, dull stupor that looks half-asleep rather than agitated, usually with lower fever, audible rattling phlegm in the throat and a greasy yellow tongue coating. Heat in the Pericardium shows marked agitation, violent delirium, very high fever and a crimson tongue with a dry coating. The key is whether awareness is quietly suppressed or violently disturbed.

Heat Scorching the Nutritive Level

Shares fever worse at night, a crimson tongue and a rapid fine pulse, but consciousness stays relatively intact, showing restlessness and insomnia rather than delirium or coma. When Nutritive-level Heat invades the Pericardium and disrupts the spirit, producing delirium, slurred speech or unconsciousness, it becomes Heat in the Pericardium, which is the more severe, spirit-focused subtype.

Yang Ming Bowel Heat

Produces delirium and high fever too, but the delirium worsens in the afternoon with tidal fever, the abdomen is distended, painful and refuses pressure, and there is constipation or foul-smelling diarrhoea. The tongue carries a thick dry yellow or black coating rather than a crimson body with scanty coating, and the pulse is deep and forceful rather than fine and rapid.

Heart Fire blazing

An internally generated pattern with restlessness, insomnia, mouth and tongue sores and a red tongue tip. It does not involve the acute high fever, sudden loss of consciousness or emergency presentation of Heat in the Pericardium: Heart Fire builds gradually from emotional or lifestyle causes, while Pericardium Heat arises acutely from externally contracted febrile disease.


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.

Common questions

Is this treatable at home?

No. Fever with confusion or loss of consciousness is an emergency. Call for help immediately.

Why is the Pericardium involved?

It is described as the protector of the Heart. When Heat is severe it is said to enter the Pericardium before reaching the Heart itself.

Why are the classical formulas not described in detail?

Some contain powerful or restricted substances and are used only in hospital settings. This page gives no doses.

What should I do if someone has these signs?

Call emergency services, keep them safe and cool, do not give anything by mouth if they are not fully conscious, and stay with them.