A doctor can tell if your child has hand-foot-and-mouth disease by the symptoms you describe and by looking at the sores and blisters.
Roast the beets for 50 to 60 minutes. Cook the beets until tender, checking them by inserting a fork into the center of each beet. When the fork glides in easily, the beets are tender enough to remove from the oven.
Your goal is to keep the moisture in the beet._. Arrange the beets on a cookie sheet leaving plenty of room around each beet. Roast in a 375 degree oven for about an hour and a half. The time will vary depending on the size of your beets. You want each one to be easily pierced with a sharp knife.