Persistent rash not affected by steroids

A boy aged 10 years presented for treatment of “eczema” of three years’ duration on his back and legs. The rash was neither itchy nor painful. The boy’s pediatrician and allergist prescribed various topical medications that helped only temporarily. Most recently, he used a cream containing clotrimazole and betamethasone with very little improvement noted.

Medical history was notable for asthma. ...