I am a 35 years old woman, severely overweight, I have blisters and open sores on my lower legs where water seeps out of, I drink uo to 6 furosemide tablets a day, I have had wound healing bandages for 2 months straight and was on a antibiotic course of ranclav 1 g two times a day, it is not healing and is getting worse, it is making a course thickening on my skin and ankles and is extremely itchy, what causes this and what treatments can I get to fix this.