Yes: adults catch hand, foot, and mouth, usually from their own kids, and it is typically milder in adults, sometimes silent, but still contagious.
The CDC notes anyone can get it; childhood exposure leaves many adults partially immune, which is why adult cases range from the classic fever, mouth sores, and hand-foot rash to a couple of off days or nothing at all. Adult-specific notes: mouth sores can make eating genuinely painful (cold drinks and acetaminophen or ibuprofen help), the rash can appear on the buttocks too, and nail changes or shedding a few weeks later are a documented oddity that regrows. Adults are contagious while symptomatic and shed virus in stool for weeks, so the hygiene rules are the same as for kids: handwashing after bathroom and diaper duty, no shared towels or utensils. Recovery runs 7 to 10 days with no treatment beyond comfort care.
What to do
Common questions
Can adults get hand, foot, and mouth?
Yes, adults get hand, foot, and mouth disease, and the usual vector is their own sick toddler. The CDC is explicit that anyone can get HFMD, though it is most common in children under 5. Adults often have partial immunity from childhood exposure, which is why adult cases tend to be milder: some adults get the classic fever, painful mouth sores, and the rash on hands and feet, others get a couple of days of feeling off with a few spots, and some catch it and shed it with no symptoms at all. The adult-specific details worth knowing: mouth sores can be genuinely painful enough to make eating miserable (cold drinks, ice pops, and acetaminophen or ibuprofen are the toolkit); the rash can also show up on the buttocks and elsewhere, not just hands and feet; and fingernail and toenail changes, including nail shedding a few weeks later, are a documented oddity that looks alarming but grows back. Adults remain contagious while symptomatic, and the virus sheds in stool for weeks after, so the same hygiene rules apply: handwashing after bathroom use and after any contact with the sick kid's drool or diapers, no shared towels or utensils. Work: there is no fixed exclusion rule for adults with mild cases, but the contagious-first-week logic and your workplace's proximity to kids or food should guide you. Most adults recover fully in 7 to 10 days without treatment, because there is no treatment beyond comfort care.