I have a rash on my face it iches and burn I was using pevisone it helped for a while but it most cleared up my face the iching is still there can I use schederma cream

Maybe you have psoriasis. You might want to go and see a dermatologist.

Your are suffering from Psoriasis. A chronic skin condition.

What are the causes of Psoriasis it is not fully known but there are many theories in this regard one. Most under stood factor which causes psoriasis is Auto-immunity. Further more genetics, skin injury, drugs, infections, whether conditions these are all the possible triggers of Psoriasis (http://www.vitiligoguide.com/psoriasis/).

If you want to get rid this skin condition you have to leave all your stress due it and be hopeful and keep continue any treatment effective treatment for it.