I have read a lot of the posts on here saying that a raised ESR can cause more 'nasties'. What are these nasties? I know that the body is attacking itself, but it would be good to know what the consequences are of having an unchecked high ESR level. Is it that important? If I have this information I can rethink my terror of taking steroids. I have nightmares of waking up with a moon face and no hair!!!!!