Dermatologic Manifestations of Hand-Foot-and-Mouth...

How to Treat Hand, Foot, and Mouth Disease (HFMD) ?
HFMD is a mild illness that is commonly caused by coxsackievirus and resolves within a week. There is no specific treatment and usually none is required. Most people with this disease get better on their own in 7-10 days. Take over-the-counter medications to relieve fever and pain caused by mouth sores. These medications can include acetaminophen or ibuprofen. Never give aspirin to children. In addition to that, drink enough liquids is essential.
See a GP if:

• Symptoms do not improve after 7 to 10 days.
• A very high temperature, or feels hot and shivery
• You're worried about your child's symptoms
• Patient is dehydrated (they're not peeing as often as usual)
• Pregnancy

Note:
Hand, foot and mouth disease can be spread to other people.