Low Grade Fever in Traditional Chinese Medicine
Understanding different low grade fever patterns according to TCM theory
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Condition Categories
Condition Categories
Low grade fever refers to a mild elevation in body temperature, typically ranging from 99.5°F to 100.9°F (37.5°C to 38.3°C). Unlike higher fevers, which are often indicative of acute infections or illnesses, low grade fevers can persist over an extended period and might be less noticeable. This condition can present itself at various times of the day but is particularly noted when it occurs consistently in the afternoon.
In Traditional Chinese Medicine (TCM), low grade fever is understood as a manifestation of underlying imbalances within the body's systems. TCM does not view fever merely as a symptom to be treated in isolation; instead, it sees it as a signal of various patterns of disharmony. These patterns need to be identified accurately before effective treatment can be administered.
TCM Patterns for Low Grade Fever
Yin Deficiency
Depletion of cooling, moistening fluids causing dryness, false heat rising, and restless agitation throughout the body
Causes: Low-grade fever, Low-grade fever in the afternoon
Yin Deficiency represents a fundamental pattern in Traditional Chinese Medicine where the body's yin fluids - blood, essence, and body fluids - become depleted, losing their ability to cool, moisten, and anchor the yang energy, resulting in relative hyperactivity of yang and internal heat manifestations.
Empty-Wind agitating in the Interior
Low-grade fever
Along with: Hand tremor, Weight loss, Flushed cheekbones, Apathy, Limb twitching
Kidney Yin Deficiency
Low-grade fever in the afternoon
Along with: Excessive sweating, Back pain, Hearing loss, Dry mouth and throat at night, Lower back pain, Constipation, Scanty and dark urine, Infertility, Premature ejaculation, Generalized fatigue, General weakness, Depression, Anxiety, Heat sensation in palms, Evening heat sensation, Flushed cheekbones, Menopausal hot flashes, Preference for sipping, Evening anxiety
Kidney Yin Deficiency With Empty-Heat Blazing
Low-grade fever in the afternoon
Along with: Flushed cheekbones, Restlessness, Insomnia, Night sweats, Heat sensation in palms, Afternoon heat sensation, Evening heat sensation, Scanty and dark urine, Hematuria, Dry throat, Preference for sipping, Dizziness, Tinnitus, Hearing loss, Lower back pain, Nocturnal emission, Hypersexuality, Dry stools
Lung Yin Deficiency
Low-grade fever in the afternoon
Along with: Hoarse voice, Itchy throat, Dislike of speaking, Thin chest
Yin Deficiency
Low-grade fever in the afternoon
Along with: Heat sensation in palms, Emaciation, Sore throat at night, Thirst, Anxiety, Jumpy, Scanty and dark urine, Dry stools, Dry mouth and throat at night, Nocturnal emission, Pain relieved by pressure and cold, Preference for sipping
Wind
Causes sudden symptoms, movement disorders, and serves as the vehicle for other pathogens
Causes: Slight fever, Low-grade fever
Wind is the predominant pathogenic factor of spring in Traditional Chinese Medicine and is considered the leader of the six external pathogens. Wind is described as "the leader of the hundred diseases" (百病之长), serving as the primary factor in external pathogenic invasions. Wind represents a pathogen characterized by constant movement, changeability, and a tendency to affect the upper and outer portions of the body.
Greater Yang Attack of Wind
Slight fever
Along with: Slight aversion to cold, Wind phobia, Low grade fever, Mild sweating, Stiff neck, Sneezing, Occipital headache
Wind-Cold invading with Yang Deficiency
Slight fever
Along with: Low grade fever, Severe chills, Exhaustion, Hypersomnia, Cold extremities, Lumbar pain, Lower back pain, Lower back coldness, General cold feeling, Lack of sweating, Headaches, Weak voice
Empty-Wind agitating in the Interior
Low-grade fever
Along with: Hand tremor, Weight loss, Flushed cheekbones, Apathy, Limb twitching
Wind-Heat entering the Lungs
Slight fever
Along with: Cough with foul smelling sputum, Low grade fever, Mild chest pain, Dry and scaly skin, Bronchitis, Bronchiectasis, Pneumonia, Pertussis, Bronchial asthma
Cold
Congeals body fluids, damages Yang Qi, and causes pain with fixed location
Causes: Slight fever, Low-grade fever
Cold is the predominant pathogenic factor of winter in Traditional Chinese Medicine. Cold represents an environmental pathogen that, when excessive, causes disease characterized by its cold, congealing, and contracting nature. While Cold is the main pathogen of winter, it can cause illness in any season through exposure to cold temperatures, getting caught in rain, sweating followed by wind exposure, or excessive air conditioning.
Greater Yang Attack of Cold
Slight fever
Along with: Occipital headache, Aversion to cold, Low grade fever, Lack of sweating, Stiff neck, Sneezing, Nasal discharge, Shortness of breath
Wind-Cold invading with Yang Deficiency
Slight fever
Along with: Low grade fever, Severe chills, Exhaustion, Hypersomnia, Cold extremities, Lumbar pain, Lower back pain, Lower back coldness, General cold feeling, Lack of sweating, Headaches, Weak voice
Exterior Cold invading the Interior
Low-grade fever
Along with: Abdominal pain, Constipation, Hypochondriac pain, Chills, Cold extremities, Sweating that doesn't reduce fever, Epigastric palpitations, Dizziness, Twitching, Unsteadiness
Heat
Intense, ascending pathogenic force that consumes body fluids, disturbs the mind, and accelerates all physiological processes
Causes: Low-grade fever, Low-grade fever in the afternoon, Slight fever
Heat is a major pathogenic factor in Traditional Chinese Medicine that can arise from external invasion or internal generation. Heat has the characteristics of burning intensity, rising upward, consuming qi and fluids, and generating wind and disturbing blood. In TCM philosophy, normal physiological warmth is called "minor fire" (少火) which maintains life functions, while pathological heat is "major fire" (壮火) which damages the body.
Damp-Heat invading the Spleen
Low-grade fever
Along with: Loss of appetite, Feeling of heaviness, Dry mouth without desire to drink, Nausea or vomiting, Malodorous diarrhea, Anal burning, Feeling of heat, Scanty and dark urine, Dull headache, Dull yellow complexion, Yellow sclera, Oily sweat, Itchy rashes, Bitter taste in the mouth, Upper abdominal fullness, Upper abdominal pain
Kidney Yin Deficiency With Empty-Heat Blazing
Low-grade fever in the afternoon
Along with: Flushed cheekbones, Restlessness, Insomnia, Night sweats, Heat sensation in palms, Afternoon heat sensation, Evening heat sensation, Scanty and dark urine, Hematuria, Dry throat, Preference for sipping, Dizziness, Tinnitus, Hearing loss, Lower back pain, Nocturnal emission, Hypersexuality, Dry stools
Wind-Heat entering the Lungs
Slight fever
Along with: Cough with foul smelling sputum, Low grade fever, Mild chest pain, Dry and scaly skin, Bronchitis, Bronchiectasis, Pneumonia, Pertussis, Bronchial asthma
Yang Deficiency
Insufficient yang qi causing coldness, fatigue, and diminished physiological functions throughout the body
Causes: Slight fever
Yang Deficiency represents a fundamental weakness of the body's yang qi in Traditional Chinese Medicine. It manifests as an inability to warm the body, transform substances, and maintain normal physiological activities, resulting in various cold-type symptoms and functional decline.
Wind-Cold invading with Yang Deficiency
Slight fever
Along with: Low grade fever, Severe chills, Exhaustion, Hypersomnia, Cold extremities, Lumbar pain, Lower back pain, Lower back coldness, General cold feeling, Lack of sweating, Headaches, Weak voice
Yin Collapse
Acute, critical depletion of body's yin fluids with uncontrolled yang floating upward, representing imminent life-threatening failure
Causes: Low-grade fever
Yin Collapse (Wang Yin) is an emergency syndrome representing the sudden, severe exhaustion of the body's yin fluids (essence, blood, and body fluids), leading to the loss of yin's anchoring function and causing yang to float uncontrolled. Classical texts describe this as a critical juncture where "yin is exhausted while yang becomes rootless," creating a dangerous state of systemic failure that, without immediate intervention, rapidly progresses to complete yin-yang separation and death.
Collapse of Yin
Low-grade fever
Along with: Night sweats, Restlessness, Dry mouth with desire to sip liquids, Heat sensation in palms, Flushed cheekbones, Emaciation, Urinary retention, Constipation
Dampness
Heavy, sticky moisture that obstructs body functions and creates sluggishness
Causes: Low-grade fever
Dampness manifests as swelling, bloating, a feeling of heaviness in the head and limbs, and digestive issues. It's like having waterlogged tissues that make everything feel heavy and slow. Common signs include a thick, greasy tongue coating, sticky mouth sensation, and stools that are difficult to flush.
Damp-Heat invading the Spleen
Low-grade fever
Along with: Loss of appetite, Feeling of heaviness, Dry mouth without desire to drink, Nausea or vomiting, Malodorous diarrhea, Anal burning, Feeling of heat, Scanty and dark urine, Dull headache, Dull yellow complexion, Yellow sclera, Oily sweat, Itchy rashes, Bitter taste in the mouth, Upper abdominal fullness, Upper abdominal pain
Herbal Formulas for Low Grade Fever
Traditional Chinese Medicine formulas used to address low grade fever
Liu Wei Di Huang Wan
Addresses these low grade fever patterns:
Main Actions
- Enriches the yin and nourishes the Kidneys
Addresses These Low Grade Fever Pattern Variations
Kidney Yin Deficiency
How it manifests:
Low-grade fever in the afternoon
Accompanying symptoms:
Excessive sweating, Back pain, Hearing loss, Dry mouth and throat at night, Lower back pain, Constipation...
Kidney Yin Deficiency With Empty-Heat Blazing
How it manifests:
Low-grade fever in the afternoon
Accompanying symptoms:
Flushed cheekbones, Restlessness, Insomnia, Night sweats, Heat sensation in palms, Afternoon heat sensation...
Yin Deficiency
How it manifests:
Low-grade fever in the afternoon
Accompanying symptoms:
Heat sensation in palms, Emaciation, Sore throat at night, Thirst, Anxiety, Jumpy...
Zhi Bo Di Huang Wan
Addresses these low grade fever patterns:
Main Actions
- Tonifies Yin
- Drains Fire
Addresses These Low Grade Fever Pattern Variations
Kidney Yin Deficiency
How it manifests:
Low-grade fever in the afternoon
Accompanying symptoms:
Excessive sweating, Back pain, Hearing loss, Dry mouth and throat at night, Lower back pain, Constipation...
Kidney Yin Deficiency With Empty-Heat Blazing
How it manifests:
Low-grade fever in the afternoon
Accompanying symptoms:
Flushed cheekbones, Restlessness, Insomnia, Night sweats, Heat sensation in palms, Afternoon heat sensation...
Zuo Gui Wan
Addresses these low grade fever patterns:
Main Actions
- Nourishes the Yin
- Strengthens the Kidneys
- Fills the Essence
- Augments the marrow
Addresses These Low Grade Fever Pattern Variations
Kidney Yin Deficiency
How it manifests:
Low-grade fever in the afternoon
Accompanying symptoms:
Excessive sweating, Back pain, Hearing loss, Dry mouth and throat at night, Lower back pain, Constipation...
Yin Deficiency
How it manifests:
Low-grade fever in the afternoon
Accompanying symptoms:
Heat sensation in palms, Emaciation, Sore throat at night, Thirst, Anxiety, Jumpy...
Bai He Gu Jin Tang
Addresses these low grade fever patterns:
Main Actions
- Nourishes Lung and Kidney Yin
- Moistens the Lung
- Transfers Phlegm
- Clears Heat
- Reliefs Cough
Addresses These Low Grade Fever Pattern Variations
Lung Yin Deficiency
How it manifests:
Low-grade fever in the afternoon
Accompanying symptoms:
Hoarse voice, Itchy throat, Dislike of speaking, Thin chest
Bu Fei E Jiao Tang
Addresses these low grade fever patterns:
Main Actions
- Nourishes the Yin
- Controls coughing
- Stops bleeding
- Tonifies the Lungs
Addresses These Low Grade Fever Pattern Variations
Lung Yin Deficiency
How it manifests:
Low-grade fever in the afternoon
Accompanying symptoms:
Hoarse voice, Itchy throat, Dislike of speaking, Thin chest
Da Bu Yin Wan
Addresses these low grade fever patterns:
Main Actions
- Enriches the Yin
- Directs fire downward
Addresses These Low Grade Fever Pattern Variations
Collapse of Yin
How it manifests:
Low-grade fever
Accompanying symptoms:
Night sweats, Restlessness, Dry mouth with desire to sip liquids, Heat sensation in palms, Flushed cheekbones, Emaciation...
Da Huang Fu Zi Tang
Addresses these low grade fever patterns:
Main Actions
- Warms the Interior
- Disperses Cold
- Unblocks the bowels
- Alleviates pain
Addresses These Low Grade Fever Pattern Variations
Exterior Cold invading the Interior
How it manifests:
Low-grade fever
Accompanying symptoms:
Abdominal pain, Constipation, Hypochondriac pain, Chills, Cold extremities, Sweating that doesn't reduce fever...
Gui Zhi Tang
Addresses these low grade fever patterns:
Main Actions
- Releases pathogens from the muscle layer
- Regulates the Nutritive and Protective Qi
Addresses These Low Grade Fever Pattern Variations
Greater Yang Attack of Wind
How it manifests:
Slight fever
Accompanying symptoms:
Slight aversion to cold, Wind phobia, Low grade fever, Mild sweating, Stiff neck, Sneezing...
Jiu Xian San
Addresses these low grade fever patterns:
Main Actions
- Secures the Lungs
- Stops coughing
- Augments Qi
- Nourishes Yin
Addresses These Low Grade Fever Pattern Variations
Lung Yin Deficiency
How it manifests:
Low-grade fever in the afternoon
Accompanying symptoms:
Hoarse voice, Itchy throat, Dislike of speaking, Thin chest
Lian Po Yin
Addresses these low grade fever patterns:
Main Actions
- Clears Heat
- Transforms Dampness
- Regulates Qi
- Harmonizes the Middle Burner
Addresses These Low Grade Fever Pattern Variations
Damp-Heat invading the Spleen
How it manifests:
Low-grade fever
Accompanying symptoms:
Loss of appetite, Feeling of heaviness, Dry mouth without desire to drink, Nausea or vomiting, Malodorous diarrhea, Anal burning...
Ma Huang Tang
Addresses these low grade fever patterns:
Main Actions
- Releases exterior cold
- Treats wheezing
Addresses These Low Grade Fever Pattern Variations
Greater Yang Attack of Cold
How it manifests:
Slight fever
Accompanying symptoms:
Occipital headache, Aversion to cold, Low grade fever, Lack of sweating, Stiff neck, Sneezing...
Ma Huang Xi Xin Fu Zi Tang
Addresses these low grade fever patterns:
Main Actions
- Tonifes the Yang
- Releases the Exterior
Addresses These Low Grade Fever Pattern Variations
Wind-Cold invading with Yang Deficiency
How it manifests:
Slight fever
Accompanying symptoms:
Low grade fever, Severe chills, Exhaustion, Hypersomnia, Cold extremities, Lumbar pain...
Mu Li San
Addresses these low grade fever patterns:
Main Actions
- Inhibits sweating
- Stabilizes the exterior
Addresses These Low Grade Fever Pattern Variations
Yin Deficiency
How it manifests:
Low-grade fever in the afternoon
Accompanying symptoms:
Heat sensation in palms, Emaciation, Sore throat at night, Thirst, Anxiety, Jumpy...
Qi Bao Mei Ran Dan
Addresses these low grade fever patterns:
Main Actions
- Enriches the Kidney Yin and Essence
- Nourishes the Liver Blood
- Beautifies hair
Addresses These Low Grade Fever Pattern Variations
Kidney Yin Deficiency
How it manifests:
Low-grade fever in the afternoon
Accompanying symptoms:
Excessive sweating, Back pain, Hearing loss, Dry mouth and throat at night, Lower back pain, Constipation...
Qing Zao Jiu Fei Tang
Addresses these low grade fever patterns:
Main Actions
- Clears dryness
- Moistens the Lungs
Addresses These Low Grade Fever Pattern Variations
Lung Yin Deficiency
How it manifests:
Low-grade fever in the afternoon
Accompanying symptoms:
Hoarse voice, Itchy throat, Dislike of speaking, Thin chest
Wei Jing Tang
Addresses these low grade fever patterns:
Main Actions
- Clears heat from the Lungs
- Transforms Phlegm
- Drives out Blood-Stagnation
- Discharges pus
Addresses These Low Grade Fever Pattern Variations
Wind-Heat entering the Lungs
How it manifests:
Slight fever
Accompanying symptoms:
Cough with foul smelling sputum, Low grade fever, Mild chest pain, Dry and scaly skin, Bronchitis, Bronchiectasis...
Yang Yin Qing Fei Tang
Addresses these low grade fever patterns:
Main Actions
- Nourishes the Yin
- Improves throat
- Resolves toxicity
- Clears the Lungs
Addresses These Low Grade Fever Pattern Variations
Lung Yin Deficiency
How it manifests:
Low-grade fever in the afternoon
Accompanying symptoms:
Hoarse voice, Itchy throat, Dislike of speaking, Thin chest
Zai Zao San
Addresses these low grade fever patterns:
Main Actions
- Tonfies the Yang
- Augments the Qi
- Induces sweating
- Releases the Exterior
Addresses These Low Grade Fever Pattern Variations
Wind-Cold invading with Yang Deficiency
How it manifests:
Slight fever
Accompanying symptoms:
Low grade fever, Severe chills, Exhaustion, Hypersomnia, Cold extremities, Lumbar pain...
Zeng Ye Cheng Qi Tang
Addresses these low grade fever patterns:
Main Actions
- Generates Body Fluids
- Nourishes the Yin
- Unblocks the bowels
- Drains Heat
Addresses These Low Grade Fever Pattern Variations
Yin Deficiency
How it manifests:
Low-grade fever in the afternoon
Accompanying symptoms:
Heat sensation in palms, Emaciation, Sore throat at night, Thirst, Anxiety, Jumpy...
Zhen Gan Xi Feng Tang
Addresses these low grade fever patterns:
Main Actions
- Pacifies the Liver
- Extinguishes Wind
- Nourishes the Yin
- Anchors the Yang
Addresses These Low Grade Fever Pattern Variations
Empty-Wind agitating in the Interior
How it manifests:
Low-grade fever
Accompanying symptoms:
Hand tremor, Weight loss, Flushed cheekbones, Apathy, Limb twitching