Rash on the crotch

I have rashes on my crotch.It itches all the time.I tend to sweat a lot and the the place i live is pretty hot so that worsens things.Now i have had these rashes for ages.I have been so dumb and have just not done anything about it.It itches and i tend to itch.It sometimes has cuts due to my ithcing.It is a large patch,which is pinkish.Looks like its fungal or is a it a ring worm.I really dont know.What is the best ointment to use.I know i must see a doc but just before i do that,what can i apply?

[Dr_Aparna]

Hi,
Jock itch, also known as tinea cruris, is a fungal infection of the skin in the groin. The warm, moist environment is the perfect place for the fungus to grow. Men are affected more often than women.
The fungus that most commonly causes jock itch is called Trichophyton rubrum.
Over-the-counter (OTC). The OTC antifungals are tolnaftate (Tinactin), clotrimazole (Lotrimin), and miconazole (Micatin). These creams should be applied twice a day for at least two weeks. Application can be stopped after the rash has been gone for one week. Creams should be applied to the rash and also at least two finger widths beyond the rash.
Other conditions similar to it care intertrigo and erythrasma.
You need to show yourself to a dermatologist who will be able to help you better.
ref:http://dermatology.about.com/cs/fungalinfections/a/jockitch.htm

[memexxx]

it musnt be  the jock itch , but may be erythrasma. get ur skin scrapings for the microscopy test. erythrasma may mimic the fungal infection, but is caused by a bacteria. why u docs dont mention other conditions which are commonly mistaken for the fungal infections??????the patients would have easier life!!!!!