Hi i think it is only acute urticaria
.acute urticaria is presented as erythematous and edematous lesions all over the body when pressure is applied.like pricking.tapping or showering etc.it is mainly due to food allergens.dyes.insect stings etc.
It can be treated by atarax
25 mg in the night and alaspan in the morning.pantop before breakfast and application of calamine
lotion.if not cured use oral predisolone starting at 30 mg tapering to 5 mg within 15 days