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Insomnia refers to a series of symptoms including difficulty falling asleep, insufficient sleep depth, easily waking up in the middle of the night with difficulty returning to sleep, staying awake all night, or waking up too early. Its manifestations are diverse and severely affect mental state and quality of life.

• Approximately 30% of adults worldwide have experienced insomnia, with the prevalence of chronic insomnia being about 10%. As the pace of modern life accelerates and stress increases, insomnia problems are becoming increasingly common.
• Due to factors such as the menstrual cycle, pregnancy, and menopause, the proportion of insomnia is higher in women than in men.
• It is more common in middle-aged and elderly populations, but its incidence is also rising among younger groups due to academic pressure, work stress, and excessive use of 3C products. Surveys in Taiwan show that about 25% of adults have experienced insomnia, with some developing chronic insomnia.

The severity of insomnia is related to its duration and can be divided into short-term insomnia (less than 3 months) and chronic insomnia (at least 3 nights per week, lasting more than 3 months). Its causes are complex and require comprehensive evaluation.

Modern Medical Findings

Insomnia is primarily related to an imbalance in the arousal-sleep regulation of the central nervous system, involving abnormal secretion of neurotransmitters (such as GABA, melatonin, serotonin) and excessive cortical activity. Clinically, it can be categorized into:

• Difficulty initiating sleep type: Lying in bed for over 30 minutes without being able to fall asleep.
• Difficulty maintaining sleep type: Waking up frequently during the night or having difficulty returning to sleep after waking.
• Early morning awakening type: Waking up earlier than desired and being unable to fall back asleep.

Common causative factors are as follows:

• Physiological factors: Various pains, frequent urination, breathing difficulties (such as sleep apnea), restless legs syndrome, and other physical discomforts that interfere with sleep.
• Psychological factors: Stress, anxiety, depression, and other emotional issues that keep the brain in a state of constant alertness.
• Environmental factors: External conditions such as noise, light, uncomfortable temperature, unsuitable mattress or pillow.
• Lifestyle: Shift work, jet lag, irregular routines, using 3C products before bed (blue light suppresses melatonin secretion).
• Dietary habits: Excessive intake of central nervous system stimulants like caffeine, theophylline, nicotine, or eating too much for dinner, or going to bed on an empty stomach.
• Medication effects: Certain drugs (such as steroids, bronchodilators, some antidepressants) may interfere with sleep.
• Other diseases: Conditions like hyperthyroidism, gastroesophageal reflux, cardiovascular diseases can also trigger insomnia.

Modern Medical Treatment

For mild insomnia, the following non-pharmacological measures are usually effective:

• Sleep hygiene education: Keep the bedroom quiet, dark, and cool; use the bed only for sleep and intimacy.
• Regular routine: Maintain fixed wake-up and bedtime schedules, even on holidays, without excessive compensatory sleep.
• Relaxation training: Practice abdominal breathing, progressive muscle relaxation, or meditation before sleep.
• Sleep restriction: Go to bed only when sleepy; if not asleep within 20 minutes, get up and return only when sleepy.

The following adjunctive medications can alleviate symptoms:

• Sedative-hypnotics: Can quickly induce sleep, but long-term use may lead to tolerance and dependence.
• Melatonin receptor agonists: Used for sleep-onset insomnia, with lower risk of addiction.
• Antidepressants: For insomnia patients with accompanying anxiety or depression.
• Antihistamines: Some have sedative effects and can be used short-term, but long-term efficacy is limited.

These medications primarily address the symptoms; if the root cause is not resolved after stopping, relapse is likely.

If the above methods are ineffective, or for managing chronic insomnia:

• Cognitive Behavioral Therapy for Insomnia (CBT-I): The first-line treatment for chronic insomnia, it changes maladaptive beliefs and habits about sleep through cognitive restructuring and behavioral adjustments.
• Light therapy: Used for those with circadian rhythm disorders to regulate melatonin secretion.
• Repetitive Transcranial Magnetic Stimulation (rTMS): Modulates cortical excitability to improve sleep architecture.

The Systemic View of Traditional Chinese Medicine (TCM)

Insomnia is merely a manifestation or symptom; its underlying cause must be identified. If it's due to external environmental factors like noise, light, uncomfortable pillows, poor sleeping posture, unhealthy dietary habits, or medication side effects, these factors must be eliminated. If it's due to discomfort from other diseases, such as pain or nocturia indirectly causing insomnia, treating the primary disease should be prioritized.

TCM believes that dysfunction of any of the Zang-fu organs can lead to insomnia, especially the heart, kidney, liver, gallbladder, and stomach. Additionally, conditions like "disharmony between nutritive and defensive qi", "yin deficiency with effulgent fire", "qi deficiency", "blood deficiency", "excessive heat", and "phlegm-fire" can all cause insomnia. Treatment should differentiate between deficiency and excess patterns of yin and yang, restore organ function, tonify deficiencies, and drain excesses.

TCM considers the key to this condition to be "disharmony between yin and yang, and lack of coordination between nutritive and defensive qi". Human wakefulness and sleep are governed by the heart spirit. Sleep occurs when yang enters yin, and waking occurs when yang exits yin. If emotional factors, diet, overwork, etc., lead to dysfunction of the Zang-fu organs, imbalance of yin-yang and qi-blood, causing the heart spirit to be undernourished or disturbed, insomnia results. Clinically, TCM formulates treatment plans by identifying the patient's "pattern", which analyzes the systemic pathological model of the disease. Here are several common patterns:

• Exuberant Heart Fire: Often due to pent-up emotions turning into fire, or frequent consumption of spicy, drying foods, leading to intense internal heart fire disturbing the heart spirit. Symptoms include restlessness, irritability, dry mouth and throat, dark and scanty urine. Treatment aims to clear heart fire and calm the mind.
• Liver Qi Stagnation Transforming into Fire: Often due to excessive stress, liver qi failing to flow freely, stagnant qi transforming into fire, disturbing the heart spirit. Symptoms include irritability, many dreams, distending pain in the chest and hypochondrium, bitter taste in the mouth, bloodshot eyes, constipation, dark urine. Treatment focuses on soothing the liver and draining fire, calming the mind.
• Internal Harassment by Phlegm-Heat: Often due to irregular diet impairing spleen and stomach transformation and transportation, leading to dampness accumulation generating phlegm, phlegm stagnation transforming into heat, disturbing the heart spirit. Symptoms include chest and epigastric fullness, restlessness and sleeplessness, heavy-headedness and dizziness, belching, gastroesophageal reflux. Treatment aims to clear heat and resolve phlegm, harmonize the middle and calm the mind.
• Yin Deficiency with Effulgent Fire: Often due to chronic illness consuming yin essence, excessive mental work, or frequent sexual activity, leading to kidney yin deficiency failing to nourish the heart, resulting in exuberant heart fire. Symptoms include restlessness and sleeplessness, palpitations, sore lower back and weak legs, tinnitus, forgetfulness. Treatment aims to nourish yin and downbear fire, promote communication between the heart and kidney.
• Heart and Spleen Deficiency: The heart and spleen are impaired, leading to insufficient production of qi and blood, and malnourishment of the heart spirit. Symptoms include frequent waking from dreams, palpitations, forgetfulness, dizziness, limb fatigue, mental exhaustion, pale complexion. Treatment aims to tonify the heart and spleen, nourish blood and calm the mind. This type of insomnia is more common in overworked women. Such patients often have poor gastrointestinal absorption combined with menstrual blood loss, easily forming the TCM "blood deficiency" pattern. The brain does not receive sufficient blood supply, so despite physical fatigue, sleep is difficult, with excessive thoughts or chaotic dreams.
• Heart and Gallbladder Qi Deficiency: Often due to constitutional weakness or sudden fright, leading to deficiency of heart and gallbladder qi, resulting in unsettled spirit. Symptoms include deficiency-type restlessness and sleeplessness, many dreams, easy fright, timidity, palpitations, shortness of breath, spontaneous sweating. Treatment aims to boost qi and calm fright, quiet the spirit and stabilize the mind.
• Yang Deficiency: Insufficiency of yang qi leading to insomnia. Patients often feel cold hands and feet, experience cold emanating from the body during sleep, and feel cold even under heavy blankets, making sleep difficult. Treatment naturally focuses on warming and tonifying yang qi.

The first three patterns above are biased towards "excess patterns", meaning hyperfunction. Yin deficiency with effulgent fire belongs to "deficiency-excess complex patterns". The latter three belong to "deficiency patterns", meaning the body has some deficiency or insufficiency. The causes of insomnia are vast and varied; patterns are not limited to these and may be mixed, such as "liver stagnation with phlegm" or various "deficiency-excess complexes" caused by chronic illness. The above is only a general outline.

Stomach Disharmony Leads to Restless Sleep

TCM has long had the theory that "stomach disharmony leads to restless sleep"⁽¹⁾. This is the earliest record of insomnia caused by poor gastrointestinal function. Clinically, cases are often seen where insomnia is cured solely with gastrointestinal medicine.

From the perspective of the modern "gut-brain axis" theory, the gastrointestinal tract originally contains about 100 billion neurons, forming the so-called "second brain." It interacts and communicates with the brain in ways beyond imagination. When gastrointestinal function is poor, the feedback signals to the brain can often cause negative emotions such as fear and depression, even leading to insomnia.

bubble_chart Footnote

1. See the chapter on "Disharmony with Diseases" in the Yellow Emperor's Inner Classic - Nitiao Lun.

TCM's Concept of "Fire"

TCM's "fire" refers to a pathogenic factor characterized by "flaming upward" and "consuming qi and injuring fluids." It can disturb the heart spirit, leading to mental excitement and irritability. "Fire" can be understood as "hyperfunction," akin to hyperactivity of the sympathetic nervous system and adrenaline, or a state of stress in modern medicine, keeping the cerebral cortex in a state of high activity. This interferes with the sleep-wake cycle, causing difficulty falling asleep and shallow, short sleep.

Modern people often experience overwork, staying up late, and irregular sleep times, causing the body to frequently switch into "fight-or-flight mode," known as the stress response in modern medicine, corresponding to excessive "deficient fire" in TCM. The brain nerves are often in a state of deficient hyperactivity, making it difficult to "shut down." TCM terms this "yang failing to enter yin", "heart yin deficiency", "non-interaction between heart and kidney", or "kidney water deficiency". This can be seen as the brain nerves, due to hyperfunction (yang), consuming all the brain's nutrient substances (yin), leaving insufficient resources to carry out the "shutdown" process, resulting in hyperactivity and unwillingness to sleep. Treatment mainly focuses on calming the deficient hyperactivity of yang qi and supplementing the consumed yin qi. Patients must also improve their lifestyle habits.

Acupuncture Treatment

Acupuncture is one of the commonly used therapies in TCM for treating insomnia. Its core concept lies in "harmonizing yin and yang, calming the heart and quieting the spirit, and dredging the meridians." TCM believes that the heart spirit governing sleep and wakefulness is closely related to the qi dynamic of the five Zang organs and the flow of qi and blood in the meridians.

During treatment, the practitioner selects acupoints on different parts of the body for stimulation based on the patient's constitution and pattern. Commonly used points include:

• Shenmen (HT7) (wrist): The source point of the Heart meridian, a key point for treating insomnia, it calms the heart and quiets the spirit, clears heart fire and relieves restlessness.
• Sanyinjiao (SP6) (lower leg): Belongs to the Spleen Meridian of Foot-Taiyin, the intersecting point of the Liver, Spleen, and Kidney meridians. It regulates and tonifies yin and blood, strengthens the spleen and benefits the heart.
• Baihui (DU20) (top of head): Belongs to the Governor Vessel, the meeting point of all yang meridians. It calms the spirit and regulates the brain.
• Anmian (EX-HN) (behind ear): An extra point specifically for treating insomnia, it tranquilizes and calms the mind.
• Taichong (LR3) (dorsum of foot): The source point of the Liver meridian, it soothes the liver and relieves depression, pacifies and subdues liver fire.

Through pattern differentiation and point selection, acupuncture can effectively regulate neurotransmitter secretion, inhibit excessive cortical excitation, and induce sleep.

Besides traditional body acupuncture, the following methods are also commonly used clinically:

• Auricular point plaster therapy: See next section.
• Moxibustion: For patients with "qi deficiency" or "yang deficiency" constitutions (aversion to cold, fatigue, palpitations), moxibustion on Zusanli (ST36) and Qihai (CV6) can warm and tonify qi and yang, or moxibustion on Yongquan (KI1) to guide fire back to its source.
• Scalp acupuncture: Selecting scalp reflex areas like the frontal and temporal regions to regulate brain function.

Acupuncture treatment is particularly effective in improving sleep latency and reducing nighttime awakenings. As an adjunctive therapy, it can reduce dependence on sleeping pills and regulate the qi dynamic holistically to improve sleep quality.

TCM External Therapies

Clinically, patients suffering from long-term insomnia often present with low spirits, anxiety, and irritability. Persistent sleep deprivation affects endocrine, immune, and cognitive functions, creating a vicious cycle. Following the principle of "treating the branch in acute cases", TCM also has many external therapies that can quickly calm the mind.

Auricular Therapy

Auricular therapy is one of the distinctive external therapies in TCM for treating insomnia. TCM views the ear as an inverted fetus, a microcosm of the body, with corresponding points on the auricle for all the Zang-fu organs. Stimulating these ear points can regulate the function of the corresponding organs, achieving therapeutic goals.

• Commonly used ear points: Shenmen, Heart, Kidney, Liver, Spleen, Subcortex, Anterior Lobe (Insomnia point).
• Operation method: Apply cowherb seeds or magnetic beads to the above points. Instruct the patient to press each point 3-5 times daily, for 1-2 minutes each time, until a slight soreness, distension, or pain is felt. Change to the other ear every 3-5 days.

This method is simple and easy for patients to continue at home. It is effective for mild to moderate insomnia and is often used in combination with body acupuncture.

TCM Herbal Foot Bath

This method applies the theory of "treating the upper disease from the lower". Through warm stimulation of the foot meridians and points, it guides fire downward, activates blood circulation, dredges collaterals, and induces sleep.

• Commonly used herbs: Cassia Bark, Mugwort leaf, Safflower, Sour Jujube Seed, etc.
• Operation method: Decoct the herbs, take the medicinal liquid and mix with warm water to about 40°C. Soak both feet for 20-30 minutes until slight sweating occurs over the body. It is most effective if done 1 hour before sleep.

From a modern medical perspective:

• Promotes circulation: Warm stimulation dilates foot blood vessels, redistributing blood throughout the body, relatively reducing brain blood supply and producing drowsiness.
• Neural reflex: The soles of the feet are rich in nerve endings; stimulation by the medicinal liquid can inhibit cortical excitation through neural reflexes.
• Drug absorption: Some herbal components can be absorbed through the skin, exerting sedative and calming effects.

This therapy is mainly suitable for insomnia patients with deficiency-cold patterns or yang qi floating upward. It should be used cautiously for those with excess-heat patterns or skin lesions on the feet.

Herbal foot baths can relax the body and mind, aiding sleep. They primarily serve as a "branch-treating" adjunctive method, achieving immediate effects through distal treatment, fully embodying the wonder of TCM's holistic concept.

Tuina Massage

Additionally, manual massage can be used to relax muscles and dredge meridians, relieving tense nerves. This also treats the branch. It mainly targets insomnia caused by muscle tension and mental stress. Specific methods include:

• Head and facial massage: Use the thumb to press and knead points like Yintang (EX-HN3), Taiyang (EX-HN5), Baihui (DU20), or comb the scalp with the fingertips to relax head meridians and calm the mind.
• Back Governor Vessel and Bladder Meridian massage: Apply pressing, kneading, and rolling techniques along the Bladder Meridian beside the spine, focusing on back-shu points like Xinshu (BL15), Ganshu (BL18), Pishu (BL20), Shenshu (BL23) to regulate corresponding organ functions.
• Abdominal massage: Use palm-rubbing techniques in a clockwise direction, focusing on pressing and kneading points like Zhongwan (CV12), Qihai (CV6), Guanyuan (CV4) to strengthen the spleen and harmonize the stomach, assist qi and blood production, and calm the heart and mind.

These external therapies mainly treat the branch, alleviating tension and discomfort. They do not address the root problems like internal yin-yang disharmony or Zang-fu organ dysfunction. They need to be combined with internal herbal medicine, acupuncture, etc., to achieve long-term stability and improvement.

Acupressure

Massage the following points for 3-5 minutes each time until a sore, numb, or distended sensation is felt. This helps relax the body and mind and aids sleep.

• Shenmen (HT7): On the wrist, at the ulnar end of the transverse crease of the wrist, in the depression on the radial side of the tendon of the ulnar flexor carpi muscle. Source point of the Heart meridian, calms the heart.
• Neiguan (PC6): On the palmar side of the forearm, 2 cun proximal to the wrist crease, between the tendons of the palmaris longus and flexor carpi radialis. Luo-connecting point of the Pericardium meridian, soothes the chest, regulates qi, calms the mind.
• Sanyinjiao (SP6): On the medial side of the lower leg, 3 cun proximal to the tip of the medial malleolus, posterior to the medial border of the tibia. Regulates and tonifies the liver, spleen, and kidney, nourishes blood and calms the mind.
• Yongquan (KI1): On the sole, in the depression when the foot is curled, approximately at the junction of the anterior one-third and posterior two-thirds of the line connecting the base of the second and third toes and the heel. Jing-well point of the Kidney meridian, guides fire downward, promotes heart-kidney communication.
• Anmian (EX-HN): On the nape, at the midpoint of the line connecting Yifeng (SJ17) and Fengchi (GB20). Extra point, specifically for insomnia.

Massage once daily before bed persistently. This can serve as daily health maintenance and adjunctive therapy.

Health Preservation and Maintenance

• Regular Routine:
  • Cultivate fixed wake-up and bedtime schedules to establish a stable biological clock.
  • Avoid excessively long daytime naps (not exceeding 30 minutes) to prevent affecting nighttime sleep.
• Dietary Regulation:
  • Avoid spicy, stimulating, grilled, fried foods, and beverages containing caffeine or theophylline. Avoid overeating or going to bed hungry.
  • Consume moderate amounts of foods that nourish blood, calm the mind, or nourish yin and clear heat, such as Sour Jujube Seed, Lily Bulb, Lotus Seed, Millet, Longan Aril.
  • Those with heart-spleen deficiency can moderately consume qi and blood tonifying foods like Red Dates, Chinese yam, chicken.
• Relaxation: Gentle stretching, abdominal breathing, or meditation can be done before bed. Avoid intense exercise and stimulating entertainment. Meditation is a good method to relax nerves and aid sleep. When tossing and turning in bed unable to sleep, try sitting cross-legged, letting go of all thoughts, counting breaths, or silently reciting your faith. When drowsiness comes, you can lie down and fall asleep smoothly.
• Create a Sleep Environment: Keep the bedroom dark, quiet, cool, with a comfortable bed. Avoid working or using 3C products in bed.

Summary

TCM views insomnia as a problem involving the malnourishment or disturbance of the heart spirit interacting with a systemic imbalance of yin-yang and qi-blood, not merely an imbalance of brain nerve excitation and inhibition. It is closely related to emotional state, dietary habits, routine regularity, and constitutional factors. Treatment approaches include clearing heart fire, soothing liver and relieving depression, resolving phlegm and clearing heat, nourishing yin and downbearing fire, or tonifying the heart and spleen. Through a combination of internal herbal medicine, acupuncture, auricular point therapy, and lifestyle adjustments, the aim is to restore heart spirit tranquility and yin-yang balance, improve sleep architecture, and fundamentally reduce relapse rates. It can quickly alleviate acute symptoms and focuses on constitutional adjustment for chronic patients to achieve long-term stability.