Hand, Foot, and Mouth Disease typically begins with the recurrence of oral blisters, followed by the appearance of small vesicular blisters on the palms of the hands, soles of the feet, knees, and buttocks. If oral blisters recur and ulcers appear later on, consider using licorice zinc granules or the recovery liquid. Hand, Foot, and Mouth Disease can also lead to viral pneumonia, myocarditis, or meningitis; do not take it lightly.