i suggest u to better stop the prednisone
syp as its elevating esr
cause it is a steroid
and reduces immunity and so stop it and observe only with atarax
syp..if ur child is feeling gud then u can stop the medicine ..if still problem exists , consult paediatrician..
rashes usually are allergic and cause need to be avoided and should be found by u at home..wat all things are causing this rash need to be avoided for ur child at home..
so take care and avoid the allergen ..