What causes rush in babies?

Many possibilities: For example, recurrent rashes on babies are often eczema, which appears as reddened, rough, dry skin areas. On severe eczema areas, the skin will get tiny cracks that ooze moisture. One's pediatrician can discuss treatment and prevention. There are also many other types of baby rashes, such as those that happen with viral infections. In newborn babies, some rashes are normal and temporary.