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.
1 Place a rack in the center of your oven and preheat the oven to 450 degrees F. Line a 9x13 baking dish with foil.  As the oven is heating up, prep your beets for roasting. Use kitchen shears to trim leaves and upper stems of the beets, leaving about 2 inches of the stems intact at the top of each beet.