I have had a rash on my face mainly on my chin and above my lips, have had this for almost 5 or 6 weeks, have been given hydrocrtisone 0.5 mg, after aweek it got worse, saw the gp again was given dactarine, again after 6 days it got worse, now I am using metroniazide ,started this on a week ago, no improvement. The rash is not itchy, but feels burning , and there is no pain. Please advise.