Scally white skin. To hospital for this?

It started with small burn like thing on my leg ,after few days skin was removed and coverd with white scally skin 2 years ago, that time I was not sure that it's a skin problem and ignored it but after couple of months this bumps started to grow on my both leg but this time those were smaller, went local skin doctor ,he said it's allergy infection an gave med. After having those meds it didn't improved a bit then I went for homeopathy medecine, Dr told it's a fungul infection and gave meds ,after that I saw improvements and after few months I again quit those meds, after few months those new scares cured I thought now all will be cured ,but that first spot is healing very slowly nearly 50% healed now that spot is becoming dark but feels like natural skin as my skin complexion is dark, now I want to know what it is and what is the cure for this , because one Dr told me that this condition is incurable ,and another Dr told this is very difficult to cure I hv to go to hospital for this