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.
In a 9-by-13-inch baking dish, toss beets with oil and season with salt and pepper. Cover dish tightly with foil; roast until tender when pierced with a knife, 45 to 60 minutes, depending on size. When cool enough to handle, rub with a paper towel to remove skins.reheat oven to 450 degrees. Place beets (peeled and cut into 1/2-inch wedges) on a large piece of foil on a baking sheet. Drizzle with oil and season with salt and pepper. Fold foil around beets and crimp ends to form a packet. Roast until beets are tender when pierced with a knife, 25 to 30 minutes.