A year-long history of a ...

A 6-year-old girl was suffering from a year-long history of a waxing and waning rash on her limbs and face. Initially, the rashes are red scaly bumps that fade over several weeks leaving smooth white spots. After a few months, the patient gets several new red bumps again. The rash is neither itchy nor painful. Her parents have tried topical steroid creams that did not help clear the rash. A physical examination reveals scattered erythematous scaly papules on both legs and several hypopigmented macules on her legs, arms, and face.