I have had some red marks on my penis.these seem to dry up with a second dried skin. when i shower these wash away become very red and sting under the shower. once dried they become itchy at times. these are supposed to have cleared up because i have been to a walk in clinic twice. i have been prescribed Daktacort cream and a course of Fluconazole(50mg). I am told it is thrush but it does no seem to clear up. this started in September. I am self employed electrician contractor so can t take time off to see my GP. I am sexually active with the same female partner for 12/13 yrs. I am a 58 male in normally good heath.