Rashes

When my fever was almost over, my tummy developed rashes.
The rashes just spread on my tummy, circulating the belly button for size of maybe 5cm from belly button top, to 5cm belly button bottom, and left right of about 8cm.

Company GP prescript me Calamine lotion and pills to eat. The pill is Piriton. I did not take the piriton but just applying the calamine lotion. But it was sooooooooo itchy, i actually need to scratch!!!!
After few days couldn't bear anymore, I went to see another GP, and this GP also prescribed me Piriton, at the same time a cream to apply on the rashes itchy spots. It's called Beprosone.
I'm not sure if Beprosone is really effective but the itchiness is gone after 2-3days and slowly healing now.

I tried applying back the Palmer's lotion. Only applied a small quantity and I felt some itchiness after that. Again I'm not sure if I'm just thinking of it, or if I'm actually sensitive towards Palmers.