I have been treated in the past for a burning leg rash that leads to leg boils only on my left leg. The doctor gave me antibiotics and water pills. He also gave me Silverdene cream. The leg temporarily gets better. After a few months it recurrs. What causes it. I do have high blood pressure and I take medication for my pressure, water pill and potassium for water retention . Could the medicine I am taken have an effect on my legs?