Anal Itching, Fissure. Need Medication

Hi...I have had an anal itch for the last three weeks, I treated it with over the counter product called anasul ointment for a week and as it was not working I then got anusul suspositories but to no benifit and the conditiosn got worse and I have now developed small piles. There seems to also be a small fissure that has developed...I stopped using the product and now just wash with warm water and apply a parrafin gel to help.sooth the anus area ..it has helped a bit but the itching is still bad although I resist the temptation to scratch as much as possible but this is very difficult when it is very irritating at times! Is there anything else i can do to help the situation or can you reccommend any other product that I can use? I appreciate any help or advice that you can offer me...Thanks