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.
Preheat oven to 350Â°F. Melt butter with oil in small saucepan. Pour over beets on sheet; toss to coat. Sprinkle with salt and pepper. Bake until heated through, stirring occasionally, about 20 minutes.