Scarlet fever? Feck, poor you, how very 1940s... anyway, get ourself a tub of Aqueous Cream from any corner chemist and apply nice and thickly. It's unscented etc so will not irritate the skin. Oilatum is not bad, and E45 cream pretty good as well. The trouble with the fancier types of cream is that they are usually scented, and scent is alchol based therefore actually quite drying.