hi..Thanks for the query.
The onset of fever with rash
points towards Viral fever
with exanthems. However ,i do not feel oral steroids
was required if above.Steroids also modify the picture of typical rashes and what you see later may be very very atypical, which is why probably the rashes appear randomly now.
At this stage i would go ahead with a topical antipruritic lotion like Calamine
and oral antihistaminic tablet only.Would help if few basic blood tests are done, e.g. routine blood counts and urine analysis.After observing for a few days ,if the problem still persists,it will be helpful to consult a dermatologist
.But most VIRAL exanthems have a self resolving nature and you should be better in few days.