Thanks for writing to us.
From the description provided it could either be pityriasis rosea
. Both of these conditions can sometimes be preceded by upper respiratory tract
infection. so firstly consult a dermatologist
and get your diagnosis confirmed.
P rosea is a self resolving condition and responds to application of steroid creams, calamine lotion and oral antihistamine.
psoriasis requires emollients and steroid creams.
Hope that answered your query.