Vert red sunburnt skin very warm to touch and I have had brief chills.... Can I just treat at home with slow and ibuprofen? What do chills mean?

Ice & nsai. As long as you do not have blistering it is a superfuical sunburn if you have been out in the sun. You have chills because your internal body temperature is catching up with the outside. Ice to the area and a non-steroidal antiinflamatory like ibuprofen will help.