Yes get a second and even third opinion if neccessary- my son gets a rash every year but his is just sweatrash-every time he gets hot,this pale itchy bumpy rash erupts,but dissapears when temparatures cool down! And when i was small(bout 4-5) the doc doing pre-school medicals told my mum i had impetigo-again,she was mortified,thinking it was a 'dirt'problem,i remember having awful foul-smelling creams,which didnt work- but it turns out i actually had psoriasis!which is more 'stress'-related-and yes it still flares up occasionally,only these days we know what it is-and how to treat it.Get another check,or a skin scraping done to be certain.