Although it’s most common in children, hand, foot, and mouth disease can also affect adults. Despite sometimes causing more severe symptoms in adults, this viral infection is usually benign and can generally be treated at home. Whether you’re a parent who’s exposed to the virus through your children or someone who works in a daycare environment, here are some tips to help you manage this disease.

Can adults get hand, foot, and mouth disease?

Hand, foot, and mouth disease (HFMD) affects adults as well as children. It is a viral infection, and the severity of the symptoms varies. It’s caused mainly by Coxsackie virus A16 or Enterovirus 71, two members of the enterovirus family. The incubation period is about 3 to 6 days after initial exposure.

How do adults get hand, foot, and mouth disease?

The virus is transmitted mainly by direct contact with the secretions of an infected person, notably their saliva, nasal secretions, or the fluid contained in HFMD vesicles (blisters). Fecal-oral transmission is also possible, especially with young children who put their hands to their mouths after touching contaminated surfaces. Respiratory droplets produced by coughing or sneezing can also contaminate anyone within a two-metre radius.

How long does hand, foot, and mouth disease last in adults?

The illness generally lasts for 7 to 10 days in adults, just like in children. The virus is easily transmitted in group environments such as daycares and schools, which explains why parents are at particularly high risk. If you have young children, your chances of contracting the virus increase considerably.

What are the symptoms of hand, foot, and mouth disease in adults?

The symptoms of hand, foot, and mouth disease in adults are generally the same as in children, but they manifest differently and may be more intense. In adults, the disease is often more severe and can lead to prolonged fatigue that lasts for several weeks after recovery.

The most common symptoms in adults are:

• a fever that can reach 38°C or 39°C and last for 2 to 3 days
• an intense sore throat, making swallowing particularly painful
• more numerous and more painful oral vesicles (blisters) than in children
• an unpleasant burning sensation that often accompanies the rash on the hands and feet

What are the key differences in how this disease affects adults?

Unlike children, adults report moderate to severe headaches, nausea, and vomiting in about 25% of cases, according to the Public Health Agency of Canada, as well as joint pain in about 20% of cases.

How can hand, foot, and mouth disease in adults be prevented?

Consistently taking preventive measures will significantly reduce the risk of spreading hand, foot, and mouth disease. Prevention is based on a few simple-but-essential everyday habits:

• Wash your hands often with soap and for at least 20 seconds, especially after using the toilet, before preparing meals, and after changing diapers.
• Disinfect high-touch surfaces such as door handles, light switches, faucets, and computer keyboards regularly.
• Never share utensils, glasses, towels, or toothbrushes with other people.
• Always cough and sneeze into your elbow rather than your hands.
• Use disposable tissues and throw them away immediately after use.
• Isolate yourself during the acute phase of the illness (the first 5 to 7 days). If you cannot avoid contact with other people, wear a mask to limit droplet transmission.
• Air out rooms regularly, ideally for 10 minutes 3 times a day, to let in fresh air and reduce the concentration of viral particles.
• Wash your laundry and dishes separately in hot water for as long as you are contagious.
• Avoid close contact with pregnant women and immunocompromised people, who are more vulnerable to complications.

Is hand, foot, and mouth disease contagious?

Yes, hand, foot, and mouth disease in adults is contagious, more so than you might think.

Because adult HFMD has several modes of transmission, it can spread easily within families and communities. Direct transmission is the most frequent mode of contagion. The virus is spread by contact with the saliva of an infected person, particularly by kissing or sharing utensils. Nasal secretions also contain a high viral load, which means that sneezing and nose blowing are also prime vectors for transmission.

The fluid found in the blisters caused by HFMD is extremely contagious. Touching lesions caused by the rash then bringing your hands to your mouth or eyes can infect you very quickly. That’s why it’s crucial to avoid direct contact with the rash of an infected person.

The disease can spread before you even know you’re ill. Transmission can begin 1 or 2 days before your first symptoms appear, when you’re still feeling perfectly healthy. This silent incubation period explains why the virus spreads so easily in families and workplaces.

You’re most contagious during the first week of symptoms, when vesicles are active and fever is present. It’s during this period that you’re most likely to transmit the virus to those around you.

How can you tell the difference between hand, foot, and mouth disease and chickenpox?

The skin lesions are the most obvious difference between the two infections.

• With hand, foot, and mouth disease in adults, blisters appear mainly on the palms of the hands, soles of the feet, and in the mouth.
• Chickenpox lesions, on the other hand, appear first on the trunk and face, then spread rapidly all over the body, including the scalp.

Itching is one of the main symptoms of chickenpox, and it’s often intense and widespread. Adults with hand, foot, and mouth disease, however, experience less itching and more pain in the mouth and throat.

How should hand, foot, and mouth disease in adults be treated?

Although there’s no specific treatment to eliminate the virus, there are several therapeutic options that can effectively relieve your symptoms. Here are a few tips for effective symptom relief:

• Acetaminophen or ibuprofen, in doses recommended by your pharmacist, can help control fever and pain. To learn more about fever management, read our article on fever and pain.
• Gargling with salt water several times a day can soothe mouth sores and reduce inflammation.
• Applying topical anesthetic gels in the mouth 15 minutes before meals can also make eating easier.
• Antihistamines can relieve itching if it becomes bothersome. Place cold compresses on skin lesions for temporary relief of pain and burning.
• Warm baths with baking soda may soothe skin discomfort.
• Keep well hydrated by drinking cold liquids, which are better tolerated than hot drinks.
• Choose a soft, non-acidic diet to avoid further irritating the painful lesions in the mouth and throat.

When should you see a health care professional?

Although hand, foot, and mouth disease in adults is generally benign, certain warning signs call for a medical consult to avoid complications. Watch for the following symptoms, which may indicate that your condition is worsening:

• A fever of more than 39°C that lasts for more than 3 days, even with the use of antipyretics.
• Signs of dehydration, such as persistent dry mouth, no urine output for 8 hours, or severe dizziness. These symptoms require immediate medical attention.
• Signs of a secondary infection such as pus, extensive redness around the lesions, or the appearance of red streaks should be assessed promptly.
• Pain that completely prevents you from drinking or eating for more than 24 hours warrants a professional consult.
• Neurological symptoms such as confusion, stiff neck, or convulsions are a medical emergency. Trouble breathing or chest pain should be assessed without delay, as they may indicate a rare but serious complication.

Hand, foot, and mouth disease in adults is generally a benign infection that clears up on its own within 7 to 10 days. It’s recommended that you take time off work, especially if your job requires interacting with vulnerable populations, such as in a daycare, or with people who are immunocompromised.

Your Brunet-affiliated pharmacist-owner is here to help. We can advise you and recommend tailored solutions as soon as you start experiencing symptoms. Visit your Brunet pharmacy or contact your pharmacist for personalized support throughout your recovery.

Last updated on March 24, 2026