Hi itching on arms and legs with dry peeling skin is called infective eczematous dermatitis
.It is due to xerosis of skin which causes itching and inturn causes scratch marks and bumps.
It can be treated by atarax
25 mg in the night time.use cefixime
200 mg twice daily .use a moisteriser daily and apply diprovate-g ointment over the lesions.use moisteriser daily even after lesions are subsided