This is an eruptive fever which is characterized by a red rash, which differs from the rash of both measles and scarlet fever, although bearing a resemblance to each. The fever runs high and the throat is often very seriously affected. Some cases are followed by dropsy, like scarlatina. It is thought to be a modification of either scarlet fever or measles, but it is not yet fully decided which. It is a mild disease, and rarely fatal. The treatment should be essentially the same as recommended for measles.