Suggest Treatment For Itchy Rashes In Body

Hello. I am 40 years old and live in Bali. I have three children . I have a very itchy flat rash all over except my palms and feet. I had a severe headache for 2 days with nausea and joint pain. I took paracetamol and these went. I have a slight fever but the rash is spreading. I feel well now but slightly light headed. What may it be.