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Epstein-Barr Virus & Mono

A very common virus that most people catch at some point, often without noticing. In teens and young adults it can cause mono — weeks of deep tiredness, fever, sore throat and swollen glands. Most people recover with rest, but the spleen needs protecting until a doctor says it’s safe.

Call 911 or go to the emergency room for:

Contact a provider promptly for yellow skin or eyes (jaundice), weakness in the arms or legs, a severe headache, a severe sore throat or swollen tonsils, a high fever that won’t go away (above 101.5°F), any belly pain, or symptoms lasting more than 10 days (MedlinePlus, American Academy of Family Physicians). Cleveland Clinic adds dizziness or fainting and intense body aches (Cleveland Clinic).

Never give aspirin to children or teens — it is linked to Reye syndrome, a serious, sometimes fatal disease that affects the brain and liver (MedlinePlus).

What is Epstein-Barr virus?

Epstein-Barr virus (EBV) is one of the most common human viruses in the world. It belongs to the herpes virus family and is also called human herpesvirus 4 (CDC). It is not the same virus that causes cold sores or genital herpes (Cleveland Clinic).

How common is it?

CDC says most people will get infected with EBV in their lifetime, especially in childhood, and will not have symptoms. About 9 out of 10 adults have antibodies showing a current or past EBV infection (CDC). Worldwide, the National Cancer Institute says more than 90% of people will be infected during their lifetime, and most never develop any symptoms (National Cancer Institute).

In young children, EBV usually causes no symptoms, or symptoms that look like any other mild, brief childhood illness (CDC). Teens and young adults are different: at least 1 out of 4 who get infected with EBV develop infectious mononucleosis (CDC).

How it spreads

EBV spreads through body fluids, mainly saliva — by kissing, sharing drinks and food, sharing cups, utensils or toothbrushes, and through toys that children have drooled on. Less often it spreads through blood and semen during sexual contact, blood transfusions and organ transplants (CDC). That’s why mono is nicknamed “the kissing disease” (MedlinePlus).

You can spread EBV for weeks after you first catch it, even before symptoms start (CDC), and people with mono may stay contagious for up to a few months afterward (MedlinePlus). There is no vaccine (CDC).

What is mono?

Infectious mononucleosis (“mono,” called glandular fever in the UK) is a contagious illness most commonly caused by EBV. It is common among teenagers and young adults, especially college students (CDC). Other infections can cause a similar illness, including cytomegalovirus (CMV), toxoplasmosis, HIV, rubella, hepatitis A, B or C, and adenovirus (CDC).

Symptoms

Symptoms usually appear 4 to 6 weeks after infection, may come on slowly, and may not all happen at once (CDC). They include:

Some early symptoms are similar to a cold or flu (American Academy of Family Physicians) — see our Common Cold guide — but if symptoms last longer than 10 days, contact your provider (MedlinePlus).

How long it lasts

Most people get better in 2 to 4 weeks, but some feel fatigued for several more weeks, and occasionally symptoms last 6 months or longer (CDC). MedlinePlus says the fever usually drops in about 10 days, swollen glands and spleen heal in about 4 weeks, and tiredness may linger for 2 to 3 months. Nearly everyone recovers completely (MedlinePlus).

How it is diagnosed

Providers usually diagnose mono from the symptoms and an exam, and lab tests are not always needed; specific tests help when a case is not typical (CDC). Blood work may show more white blood cells than normal, unusual-looking white blood cells, and abnormal liver tests (CDC). A throat test for strep may also be done, because strep throat can look similar (MedlinePlus).

  • The monospot test looks for “heterophile” antibodies in the blood. Results are usually ready within an hour, but it has a high rate of false negatives (MedlinePlus); it may be negative if done within 1 to 2 weeks of getting sick (MedlinePlus). CDC does not recommend the monospot for general use: it is often negative in children with mono, and at best it suggests typical mono without confirming EBV (CDC).
  • EBV antibody tests look for antibodies to different parts of the virus. The pattern can show whether you have never been infected, were infected recently, or were infected in the past (CDC). Early in the illness it may need repeating after 10 days to 2 weeks or more (MedlinePlus).

A virus that stays for life

After infection, EBV becomes latent (inactive) in the body. Sometimes it reactivates; this does not always cause symptoms, but people with weakened immune systems are more likely to have symptoms if it does (CDC). A reactivated virus can be passed to others, no matter how long ago the first infection was (CDC). Most people have mono only once (Cleveland Clinic).

Possible complications

Most people get better with no problems (NHS). Less often, mono can lead to anemia, hepatitis with jaundice (more common after age 35) and rare nerve problems (MedlinePlus). A ruptured spleen is the biggest concern in previously healthy people (Cleveland Clinic), though it is rare (American Academy of Family Physicians). Serious illness, including death, is possible in people with weakened immune systems (MedlinePlus).

Side by side

Six approaches compared

For every condition we look at the same six approaches: what each involves, what it typically costs, and what a patient can realistically expect.

ApproachWhat it involves Estimated costWhat to expect
Conventional medicine (AMA) Supportive care: rest, fluids, salt-water gargles, and acetaminophen or an NSAID such as ibuprofen for pain and fever (no aspirin for children or teens). No antibiotics for the virus; steroids only for specific complications; no contact sports until a doctor says it’s safe. Cost estimate being researched (doctor visit, monospot and EBV antibody tests). There is no cure or specific treatment. Most people feel better in 2 to 4 weeks, though tiredness can linger for weeks or months. Antivirals have shown little or no clear benefit.
Chiropractic No role in treating EBV or mono. Not applicable. We found no studies of chiropractic care for mono. If you see a chiropractor for another reason, tell them you have mono and avoid any pressure on the belly while the spleen may be enlarged.
Acupuncture Not an established treatment for EBV or mono. Cost estimate being researched. We found little research on acupuncture for mono. Generally low-risk with a licensed practitioner using sterile, single-use needles, but it does not treat the virus.
Herbal medicine No herb or supplement is proven to fight EBV or shorten mono, and products sold as “immune boosters” often lack strong evidence. Little research on echinacea for mono. Cost estimate being researched. Mono can inflame the liver, so avoid products with liver-injury reports, such as kava and concentrated green tea extracts, and avoid alcohol until your provider says your liver has recovered. Check every product with your pharmacist.
Massage therapy Gentle massage for comfort once the worst has passed — never deep work on the belly while the spleen may be enlarged. Cost estimate being researched. We found little research on massage for mono. It may help you relax during a slow recovery but does not treat the virus.
MBHA Wellness Coach Rest and sleep, fluids and easy-to-swallow foods, not sharing cups or kissing while sick, a plan for school or work, a paced return to activity once cleared, and support through lingering tiredness. Cost estimate being researched. A coach helps you recover steadily and protect others. A coach never clears you for sports — your doctor does — and never replaces care for the warning signs above.

Approach 1 of 6

Conventional medicine (AMA)

There is no cure for mono and no specific treatment for EBV. Mono goes away on its own, and care focuses on easing symptoms while your body fights the virus (CDC, American Academy of Family Physicians).

1. Supportive care at home

2. Why antibiotics don’t help — and the “amoxicillin rash”

Mono is caused by a virus, and antibiotics don’t work against viruses (American Academy of Family Physicians, NHS). If you also have a bacterial infection such as strep throat, your doctor may prescribe an antibiotic for that (American Academy of Family Physicians).

CDC advises that people with mono should not take penicillin antibiotics such as ampicillin or amoxicillin (CDC). A pink, measles-like rash is more likely if you take ampicillin or amoxicillin for a throat infection while you have mono (MedlinePlus), and taking antibiotics for mono may cause an itchy rash (American Academy of Family Physicians). Antibiotics should typically not be given without a test showing strep or another bacterial infection (MedlinePlus). If you get a rash while taking any antibiotic, call your prescriber.

3. Steroids — only for specific complications

In children, corticosteroids such as prednisone are given to only a small percentage of those with EBV, and only for certain complications, such as tonsils so swollen they may block breathing (American Academy of Pediatrics). MedlinePlus says a steroid may be given if symptoms are severe (MedlinePlus). For routine symptom relief, a Cochrane review of seven trials (362 people) found insufficient evidence that steroids help, and too little research on their side effects and long-term effects (Cochrane review, 2015).

4. Antivirals are not routinely helpful

Antiviral medicines such as acyclovir have little or no benefit in mono (MedlinePlus), and Cleveland Clinic notes that antivirals don’t work against it (Cleveland Clinic). A Cochrane review of seven trials (333 people) rated the evidence as very low quality and found their effectiveness uncertain. Two of 12 outcomes favored treatment, but the authors said the gains may not be clinically meaningful, and antivirals reduced shedding of the virus only while they were being taken (Cochrane review, 2016).

5. Protecting the spleen

Because mono can enlarge the spleen, CDC advises avoiding contact sports until you fully recover; strenuous contact sports may cause the spleen to rupture (CDC). Your doctor sets the timing — see Getting back to school, work and sports below for what different sources say.

What it costs

Doctor visits, the monospot test and EBV antibody tests: cost estimate being researched. Over-the- counter pain relievers and lozenges: cost estimate being researched.

How well it works — what to expect

Supportive care eases symptoms while mono runs its course; nearly everyone recovers completely (MedlinePlus).

Find a medical doctor in our directory

Approach 2 of 6

Chiropractic

Chiropractic care has no role in treating EBV or mono. A PubMed search for chiropractic or spinal manipulation in mono or EBV found no studies, and none of the medical sources on this page mention it.

If you see a chiropractor for back or neck pain while you have mono or are recovering, tell them. MedlinePlus advises avoiding pressure on the spleen (MedlinePlus), and physical activity can put too much pressure on an enlarged spleen (Cleveland Clinic). As an MBHA caution, avoid any deep pressure on the belly or forceful techniques until your doctor confirms your spleen is back to normal.

Find a chiropractor in our directory

Approach 3 of 6

Acupuncture

We found little research on acupuncture for mono or EBV: a PubMed search turned up no clinical trials in people with either. Acupuncture does not treat the virus.

If you choose acupuncture for comfort during a long recovery, relatively few complications have been reported; problems have come from non-sterile needles and improper technique, and FDA requires acupuncture needles to be sterile and labeled for single use (NCCIH). Use a licensed practitioner, tell them you have mono, and wait until you are well enough to travel to appointments.

What it costs

Cost estimate being researched.

Find an acupuncturist in our directory

Approach 4 of 6

Herbal medicine

No herb or supplement has been shown to fight EBV or shorten mono. Many products promise to “boost” immunity, but strong evidence is often lacking: a 2022 review of 27 ingredients with immune-health claims found rigorous human studies for only 8 of them, and even those weren’t strong enough for definite conclusions (NCCIH).

Echinacea

Echinacea is mainly promoted for colds and other respiratory infections, and much less research has been done for other uses (NCCIH). We found little research on echinacea for mono: a PubMed search found only a laboratory (cell) study and a review, and no trials in people with mono. It can cause allergic reactions, which may be severe, and stomach upset (NCCIH).

Protect your liver

Mono can swell the liver and cause abnormal liver tests (CDC), and sometimes hepatitis with jaundice (MedlinePlus). That matters because some supplements can harm the liver too:

  • Acute liver damage from dietary supplements is still rare, but more cases are being reported; it can be severe, can require an emergency liver transplant, and is sometimes fatal. “Natural” doesn’t always mean safe (NCCIH).
  • Kava has been linked to rare, sometimes serious or fatal liver injury (NCCIH), and green tea extract pills or capsules, uncommonly, to liver injury (NCCIH).
  • Alcohol. Alcohol damages the liver over time (MedlinePlus). As an MBHA caution, avoid alcohol while you are ill and until your provider says your liver has recovered.

If your liver tests were abnormal or you had jaundice, ask your provider before taking any supplement. MBHA plans a separate Liver guide.

Interactions

Supplements may interact with your medicines or pose risks with certain health problems (NCCIH). With echinacea, for example, the evidence is conflicting on whether it interacts with some drugs processed by the liver, and it might interact with medicines that suppress the immune system (NCCIH), and many common herbs have known or possible interactions (NCCIH). Tell your doctor and pharmacist about everything you take. We don’t list doses here.

What it costs

Cost estimate being researched.

Approach 5 of 6

Massage therapy

We found little research on massage for mono or EBV, and massage doesn’t treat the virus. The risk of harm from massage appears low, but rare serious side effects have been reported, some involving vigorous techniques such as deep tissue massage (NCCIH).

  • No deep work on the belly while the spleen may be enlarged. MedlinePlus advises avoiding pressure on the spleen (MedlinePlus); applying this to massage is MBHA’s caution. Wait until your doctor confirms your spleen is back to normal.
  • Later, gentle massage of the back, neck, hands or feet may help you relax and sleep during a slow recovery. Keep sessions short, and rest afterward.
  • Wait until you feel better and no longer have a fever before booking a session.

What it costs

Cost estimate being researched.

Find a massage therapist in our directory

Approach 6 of 6

MBHA Wellness Coach

An MBHA Wellness Coach can help you through a recovery that is often slower than people expect — alongside, never instead of, your doctor.

Rest and sleep

Sleep helps your body fight infection (American Academy of Family Physicians), and getting enough rest is important to keep symptoms from getting worse (Cleveland Clinic). A coach can help you plan naps, a regular bedtime and fewer commitments for a while.

Fluids and food

Drink plenty of fluids (CDC). Mono often dulls the appetite (MedlinePlus), so a coach can help you plan soft, easy-to-swallow meals and snacks, and cold treats for a sore throat (American Academy of Family Physicians).

Protecting the people around you

CDC advises avoiding kissing, sharing drinks and food, and using personal items that an infected person recently used (CDC). The NHS adds washing your hands regularly, washing anything that may have your saliva on it, and not giving blood while you are ill (NHS).

School, work and a paced return to activity

A coach can help you plan a lighter schedule at school or work at first (see Getting back to school, work and sports). Once your doctor clears you, a coach can help you build back up gently, notice when you are overdoing it, and keep a simple diary of energy and symptoms to share at check-ups. A coach never decides when it’s safe to play contact sports — that is your doctor’s call.

When tiredness lingers

Fatigue after mono can last weeks or months (CDC). A coach can help you set realistic goals and stay connected with friends. If fatigue lasts more than 6 months, ask your provider about other causes and about ME/CFS (CDC), and see our Chronic Fatigue & ME/CFS guide.

Another approach

Getting back to school, work and sports

School and work

Some people miss school or work while they recover (Cleveland Clinic). Stay home while you feel ill and your symptoms are still fading (Cleveland Clinic); the NHS says you can go back as soon as you start to feel better (NHS). Because tiredness can linger for weeks (CDC), many people do best with a gradual return. Ask your provider how long you, or your child, should stay home (American Academy of Family Physicians).

Sports and exercise: why the spleen matters

The spleen sits in the upper left part of the belly. Mono can enlarge it, and in rare, severe cases it can tear open (American Academy of Family Physicians). A blow to the area of an enlarged spleen can rupture it, causing internal bleeding that can be fatal — though this is uncommon, and mono rarely causes death (American Academy of Pediatrics). The spleen can stay enlarged even after the tiredness ends (CDC), so feeling better is not the same as being safe for contact sports.

Sources word the timing a little differently:

The bottom line: your doctor decides when you can return. Ask before going back to practice, the gym or heavy lifting.

Another approach

EBV and other diseases: what research shows

Almost everyone carries EBV, so a link with another disease doesn’t mean having EBV will cause it. Most people with EBV never get the diseases below.

Multiple sclerosis

Several viruses have been studied in multiple sclerosis (MS), but EBV is the one most consistently linked to it. About 5% of people have never been infected with EBV, and they are at lower risk of MS; people infected in childhood appear to be at lower risk than those infected as teens or adults. But the vast majority of people infected with EBV will not develop MS (National Institute of Neurological Disorders and Stroke).

The strongest evidence so far comes from a 2022 study in Science that followed more than 10 million young adults on active duty in the U.S. military, 955 of whom developed MS. The risk of MS rose 32-fold after EBV infection, but not after infection with other viruses, including the similarly spread cytomegalovirus. A blood marker of nerve damage rose only after people became infected with EBV. The authors concluded their findings suggest EBV is the leading cause of MS (Bjornevik et al., Science, 2022). Even so, EBV alone is not enough: nearly everyone has it, and very few people get MS. MBHA plans a separate MS guide.

Certain cancers

The National Cancer Institute says EBV causes mono as well as certain types of lymphoma and cancers of the nose and throat; new research suggests EBV may lead to cancer by causing breaks in human DNA (National Cancer Institute). Cancers linked with EBV include Burkitt lymphoma, nasopharyngeal cancer (upper throat), Hodgkin and non-Hodgkin lymphoma, and post-transplant lymphoproliferative disorder, in which white blood cells are made in excess after an organ transplant (CDC). Past EBV infection, in early childhood or the teen years, increases the risk of Hodgkin lymphoma (National Cancer Institute); MBHA plans a separate Hodgkin’s guide.

Keep this in proportion: cancer caused by EBV is rare, and it is not clear why some infected people get cancer while the vast majority don’t (American Academy of Pediatrics). There is no vaccine to prevent EBV and no specific treatment for the infection itself (National Cancer Institute). For cancer basics and support, see our Cancer guide.

Chronic active EBV: rare and serious

Chronic active EBV disease (CAEBV) is a rare disorder in which a person’s body cannot control the virus. It is progressive, with very high levels of EBV genetic material (DNA) in the blood, and often causes fever, swollen lymph nodes, an enlarged spleen, liver inflammation or low blood counts. Without treatment it can lead to serious infections, organ failure or lymphoma. The only proven effective treatment is a stem cell (bone marrow) transplant (Kimura and Cohen, Frontiers in Immunology, 2017, Kimura and Cohen, Blood, 2026). Most cases have been reported from Japan (Cohen et al., Blood, 2011).

Another approach

Long-term fatigue and “chronic EBV”

If you have been exhausted for months and been told it is “chronic EBV,” your tiredness is real, and you deserve a careful answer.

Fatigue after mono is common, and usually improves

Some people stay tired for several weeks after mono, and occasionally symptoms last 6 months or longer (CDC). In one study of 301 teens with mono, 13% met criteria for chronic fatigue syndrome at 6 months, 7% at 12 months and 4% at 24 months — most recovered with time (Katz et al., Pediatrics, 2009).

Mono can be a trigger for ME/CFS

CDC says about 1 in 10 people infected with EBV, Ross River virus or Coxiella burnetii later develop an illness like myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS), especially if their first illness was severe (CDC). No single infection has been established as the cause of ME/CFS, but up to 80% of patients develop it after an acute viral-like illness (CDC). In a study that enrolled college students before they got sick, 55 of 238 students who developed mono (23%) met criteria for ME/CFS 6 months later (Jason et al., Clinical Infectious Diseases, 2021). In a 7-year follow-up, 81% of those whose ME/CFS was severe at the start still met the criteria, while only about a third of those with moderate or lingering symptoms at 6 months did (Jason et al., Frontiers in Medicine, 2026).

Why “chronic EBV” became “chronic fatigue syndrome”

In the mid-1980s, some researchers suggested that persisting EBV infection might explain chronic illness and fatigue in adults (Straus et al., Annals of Internal Medicine, 1985). But when investigators studied a cluster of patients tested for “chronic EBV syndrome,” EBV blood tests could not reliably tell sick patients from others, and results were poorly reproducible between labs (Holmes et al., JAMA, 1987). In 1988, a group of experts proposed a new name, chronic fatigue syndrome, because both the value of EBV tests and a causal link with EBV remained doubtful (Holmes et al., Annals of Internal Medicine, 1988).

What an EBV blood test can and can’t tell you

Since more than 90% of adults have been infected with EBV, most adults have antibodies from an infection years earlier. High or elevated antibody levels may be present for years and do not mean a recent infection (CDC). So a “positive EBV test” alone does not explain long-term fatigue. CDC advises that if someone has been ill for more than 6 months without a lab-confirmed EBV infection, other causes of chronic illness, or chronic fatigue syndrome, should be considered (CDC). Chronic active EBV (above) is a different, rare disease diagnosed with specialized tests.

What this means for you

  • Be cautious about clinics or products selling “EBV cures” or protocols based on antibody levels alone.
  • If you have had post-mono fatigue for 6 months or more, especially if effort makes you feel worse a day or two later, read our Chronic Fatigue & ME/CFS guide, which explains diagnosis, pacing and support.

Member stories

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Sources

This page is for education only and is not medical advice. Costs are typical U.S. ranges and estimates; yours will depend on your provider, location and insurance. Talk with your doctor before starting, stopping or combining any treatment. In an emergency, call 911. See our disclaimer.

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