What color are the blisters on the tongue from hand, foot, and mouth disease?

Patient's question:

No

Doctor's answer:

Hello, hand, foot, and mouth disease is caused by enteroviruses, with the main patients being infants and young children under the age of 5. During the onset of the disease, small blisters or red papules, ranging in size from rice grains to green beans, with surrounding redness, may appear on the inner cheeks, tongue, soft palate, hard palate, inner lips, palms, soles of the feet, elbows, knees, buttocks, and perineum. These blisters are unlike insect bites, medication rashes, oral and labial gingival blisters, or chickenpox, hence the nickname "four" (unlike these four). Clinically, they also exhibit the "four no" characteristics of being painless, itchy, scab-free, and scar-free.