Fatigue

What is Fatigue?

Fatigue is persistent exhaustion that affects well-being and daily function, and it is one of the most common reasons people visit a primary care office.^[1] It differs from ordinary tiredness, which usually improves with sleep or a break.

Common symptoms

Fatigue can be physical, mental or both. People describe weakness, heavy limbs, trouble concentrating, unrefreshing sleep, low mood and reduced motivation.^[1]

In ME/CFS (chronic fatigue syndrome), the defining feature is post-exertional malaise, a worsening of symptoms after physical or mental effort.^[1] Cognitive problems, often called brain fog, are common in long COVID, which can look much like ME/CFS.^{[2, 3]}

Causes and risk factors

Fatigue is usually classified as physiologic, secondary or chronic. Physiologic fatigue comes from things like poor sleep, diet and an imbalance between effort and rest. Secondary fatigue comes from an underlying condition. Chronic fatigue includes ME/CFS.^[1]

Common medical contributors include sleep disorders, depression, anemia, thyroid disease, infections and medicine side effects.^[1] After COVID-19, a meta-analysis of 81 studies found fatigue in about 32 percent of people 12 or more weeks later.^[2]

How it is diagnosed and treated conventionally

Evaluation starts with a full history and physical examination, followed by tests guided by what is found.^[1] Treatment depends on the cause: physiologic fatigue is addressed with sleep habits, diet and balancing activity, and secondary fatigue improves when the underlying condition is treated.^[1]

For ME/CFS there is no proven cure. Care is directed at symptoms, and activity pacing is recommended because exercise can trigger post-exertional malaise.^[1] A 2025 review states that graded exercise therapy is contraindicated in ME/CFS because it can cause harm, and that cognitive behavioral therapy serves as an adjunct for symptoms.^[3]

Why Fatigue calls for a whole-person approach

Fatigue rarely has one cause. Sleep, mood, illness, medicines and stress usually overlap, so addressing only one can leave the fatigue in place.

Care that supports sleep, stress and general health can sit alongside the medical search for a cause. It supports that work and does not replace it.

Sleep

Poor sleep is a leading contributor to fatigue, and sleep disorders such as insomnia and sleep apnea are common causes that need medical assessment.^[1] Treating insomnia is a reasonable goal in its own right.

Mood and mental health

Fatigue and low mood often travel together. Depression is a recognized cause of fatigue, and persistent exhaustion can in turn lower mood and motivation, so both deserve assessment.^[1]

Post-viral illness and inflammation

After infections such as COVID-19, immune dysregulation, oxidative stress and mitochondrial and neuroinflammatory changes have been proposed as mechanisms of ME/CFS and related post-viral fatigue.^[3] These ideas are still being tested.

Medicines and other medical causes

Some medicines cause fatigue as a side effect, and thyroid disease, anemia and heart or lung disease can also be involved.^[1] These need a physician's review before fatigue is attributed to anything else.

Acupuncture for Fatigue

What the research shows

Acupuncture may reduce fatigue in some groups, but the evidence is low certainty. No review of acupuncture for fatigue in general was found, so the findings come from specific conditions.

In chronic fatigue syndrome, a meta-analysis of 16 studies with 1,346 people found acupuncture gave a better response rate than sham acupuncture, with low certainty. The studies were mostly of low quality and the authors said no firm conclusion could be reached.^[4] A 2025 meta-analysis reported improved near-term and long-term fatigue, and also noted weaknesses such as differences between studies and lower-quality trials.^[5]

In cancer-related fatigue, a meta-analysis of 10 trials with 1,327 patients found acupuncture reduced fatigue compared with sham acupuncture or usual care.^[6] The ASCO and Society for Integrative Oncology guideline reviewed 113 trials. It said acupressure and moxibustion may be recommended for fatigue after cancer treatment and rated the certainty of evidence for the interventions overall as low to moderate. Neither of those is needle acupuncture.^[7] A multicenter trial of 96 people found moxibustion reduced cancer-related fatigue more than usual care, though the sham group also improved.^[8]

For long COVID, a systematic review of 13 trials of traditional, complementary and integrative medicine for fatigue found low to very low certainty evidence of benefit, mostly for herbal products.^[9]

How acupuncture may work

How acupuncture might ease fatigue is not established. If acupuncture helps, better sleep and lower stress may be part of the reason, since acupuncture improved sleep quality compared with medication in a meta-analysis of 15 insomnia trials.^[10] This is a general finding and was not tested as an explanation for fatigue.

What treatment involves

Treatment uses fine, sterile, single-use needles placed at points on the body, usually left in place for about 20 to 40 minutes. In the cancer-related fatigue meta-analysis, schedules that worked ranged from three sessions a week for two or three weeks to weekly sessions for six weeks.^[6] We reassess after a short course of visits.

Serious problems are rare. In prospective studies, about 9 in 100 patients had a minor reaction such as brief bleeding, soreness or redness at a needle site, and serious events occurred in about 1 in 10,000 patients.^[11] Tell the practitioner first if you have a bleeding disorder, take blood thinners, are pregnant, or have a pacemaker (relevant to electroacupuncture).

Ayurvedic medicine for Fatigue

The Ayurvedic view

Ayurveda describes persistent tiredness and low vitality in terms of weak digestive fire (agni), accumulated ama (undigested material), depleted ojas (vital essence) or Vata imbalance. Classical names include Klama and Daurbalya (weakness). These are traditional frameworks, not diagnoses.

Therapies that may be used

Care is chosen for the individual and traditionally combines:

• Regular meals, sleep and rest tailored to the person's constitution
• Gentle yoga, breathing practices and meditation
• Herbs such as ashwagandha (Withania somnifera), prescribed individually by a practitioner
• Warm oil massage

Panchakarma is not appropriate during pregnancy, acute illness or frailty, and strong cleansing is generally unsuitable for someone who is already exhausted.

What the research shows

The evidence is very limited. We found no systematic reviews of Ayurvedic treatment programs for fatigue. A systematic review of ashwagandha clinical studies noted trials in chronic stress, insomnia and anxiety, and one use as an adjuvant for reducing fatigue in cancer patients receiving chemotherapy. The authors called for better-designed trials.^[12] Evidence for ashwagandha in fatigue itself is therefore thin.

Quality is a separate concern. Lead, mercury or arsenic was detectable in about one fifth of Ayurvedic medicines sold online in a US study, so products need to come from tested sources.^[13]

Herbal medicine for Fatigue

Herbs and formulas that have been studied

Studied herbs include ginseng (Panax ginseng and American ginseng) and a wide range of Chinese herbal formulas that tonify qi, many for chronic fatigue syndrome.^{[14, 15]} Ashwagandha and rhodiola are traditional adaptogens that are sometimes used for fatigue.

What the research shows

The evidence is limited and of mixed quality. A meta-analysis of 84 randomized trials with 6,944 people found Chinese herbal medicine lowered fatigue scores in chronic fatigue syndrome and reported no serious adverse events. The authors said the methodological quality was generally poor and the results need cautious interpretation.^[15] An earlier Cochrane review found no trials rigorous enough to include.^[16] A 2025 meta-analysis of 10 trials in post-COVID syndrome found only a non-significant trend toward less fatigue with Chinese herbs.^[17]

A meta-analysis of 12 trials with 1,298 patients reported that ginseng reduced disease-related fatigue.^[18] A separate systematic review of 8 trials found ginseng compounds beat placebo on fatigue scales with a similar number of side effects.^[14] The ASCO guideline said American ginseng may be recommended for fatigue during cancer treatment, but found that other dietary supplements did not improve cancer-related fatigue.^[7]

Safety and herb-drug interactions

Herbs are active substances and can interact with medicines. Reported interactions include reduced warfarin levels and mania with the antidepressant phenelzine when taken with ginseng, and bleeding with ginkgo and warfarin.^[19] Herbal and dietary supplements account for about 20 percent of drug-induced liver injury in the United States.^[20]

In one study, about one fifth of Ayurvedic medicines bought online contained detectable lead, mercury or arsenic.^[13] Herbs should come from tested sources and be prescribed individually. Tell us if you are pregnant or breastfeeding, have liver or kidney disease, or take thyroid, diabetes or blood pressure medicine.

Translating traditional medicine into modern biological language

The links drawn here are interpretation, not equivalence. Chinese medicine often describes persistent fatigue as qi deficiency, sometimes with spleen deficiency, blood deficiency or dampness. Researchers studying post-viral and chronic fatigue examine things that loosely parallel these ideas: immune dysregulation, oxidative stress, mitochondrial function and sleep.^[3]

Ayurveda's weak agni, ama and low ojas similarly describe exhaustion with poor digestion and slow recovery. No study has shown that a TCM pattern or a dosha corresponds to a specific biological process.

How this care fits with your medical care

Integrative care for fatigue is complementary. Because fatigue can signal a medical problem, it needs an evaluation by your physician, and we do not diagnose its cause. Keep your physician involved and do not stop or change prescribed medicines without your prescriber.

Please bring your diagnosis if you have one, recent blood test results, a full list of medicines and supplements, and details of any recent infection, cancer treatment or sleep study. If you have ME/CFS, tell us about post-exertional malaise so treatment is paced to your energy.

When to seek urgent medical care

Fatigue that comes with certain symptoms can point to a serious condition.

• Chest pain, shortness of breath or a racing or irregular heartbeat
• Fainting, sudden weakness on one side, or new confusion
• Unexplained weight loss, fever or night sweats along with fatigue
• Black or bloody stools, or heavy bleeding
• Thoughts of harming yourself (call or text 988, the Suicide and Crisis Lifeline)
• Fatigue that is worsening quickly or lasts for weeks without explanation, which needs a physician visit soon

If any of the first five occur, call 911 or go to the nearest emergency department.