When I go outside, my skin gets hot, I get pimples and it stings a lot?

It sounds like you may have a sensitivity to the sun or certain environmental factors. It would be a good idea to cover your skin with protective clothing and apply a fragrance-free moisturizer before going outside. Some examples of moisturizers that may help are Glaxal Base, Cutibase, Cerave, and others. If you have any other questions, feel free to ask!