Does anyone know what skin condition it could be?

[lmbnsa]

Skin spot started out light pink size of thumb on my calf.
Dr. said it was excema, about 2 months later got darker (like it was irritated).
So Dr. gave me creams, combo of anti fungals and steroids. Nothing happened.
6 months later it got larger (about 1/2 dollar size) and scaly.
She said it was psoriasis
I REQUESTED SHE DO SOME KIND OF TEST
She sent it out for fungus, cancer, psorasis
it was negative for fungus, cancer, psorasis
Now she tells me she doesn't know what it is.
Diet changes she tells me..... any answers
This is a dermatologists.
It started out like this
http://images.google.com/imgres?imgurl=http://www.dermis.net/bilder/CD040/550px/img0005.jpg&imgrefurl=http://www.dermis.net/dermisroot/en/29279/image.htm&h=380&w=550&sz=47&hl=en&start=15&sig2=Aj 0w7Pwh_RfcO3_RtqDNZA&tbnid=gtLIgqRtdd2a4M:&tbnh=92 &tbnw=133&ei=gSHdR6KYC4O0hALx3q3lAQ&prev=/images%3Fq%3DErythema%2BAnnulare%2BCentrifugum%2BD arier%26gbv%3D2%26hl%3Den%26sa%3DG

now looks more like this
http://dermis.multimedica.de/bilder/CD058/550px/img0095.jpg

[a10cowgirl]

A picture would be helpful. Go to a Dermatologist (skin MD) to get a definite answer. Some skin conditions are genetic. Ask you parents if anyone in the family has any skin diseases. It's a place to start while you're waiting for that Dermatological appointment.

Take care my friend