I had hospital diagnosed hfMd. They prescribed only paracetamol and a throat spray which I had no time to buy as I could not get to a pharmacy.
Instead I took aspirin twice a day for its supposed anti viral effect. On the second night I took an antihistamine and I woke up feeling fine after feeling awful the day before. They say it takes 5 to 7 days to clear up so
Apparently you can cause Reyes syndrome giving aspirin to kids so this is a suggestion for adult hfmd.