How Can Foot Eczema With Spreading Patches Be Treated?

sir, I am female person aged about 39. I am suffering with egzima starting over the foot and below knee with itching. I undergone treatment with many a skin specialists during last ten years. But No cure. Is this is curable...because the brown patches starts on legs and spreading around and around. My Name is Padmalatha, Madanapalle, chittoor dist., andhra pradesh.