Dx cellulitis/fungal infection, no better x 6 months continued +3 edema ble, legs have now turned purple; doppler negative?

See a dermatologist: Not just a few, but MOST diagnoses of "cellulitis" by amateurs are not correct. That is why antibiotic treatment fails. If it is BOTH legs it is almost certainly something other than cellulitis. You need to see a pro, a dermatologist. Most common is STASIS dermatitis due to defective valves in the veins. There are other possible diagnoses. Treatment follows diagnosis.

Maybe venous stasis.: We see many patients who have suffered "cellulitis" treated in ED, primary docs,urgent centers, wound centers, etc. Often told its "infection" or "cellulitis" but true diagnosis is venous stasis. Causes redness, edema, purple color, pain. Antibiotics don't help. Ultrasound WITH REFLUX STUDIES needed to assess with vascular consultant. Commonly easy to treat with simple procedure in Dr office.