Objectives:1. To investigate the incidence of PKDL after SSG or Miltefosine mono-therapy for VL; 2. To investigate serum level of IL-10, TGF-β and markers of lipid metabolism (serum cholesterols) before and after treatment of PKDL; 3. To investigate the mRNA expression of IL-10, TGF-β in skin lesion of PKDL; 4. To investigate the association of gene polymorphism of IL-10, TGF-β and PKDL; 5. To develop a new diagnostic tool for diagnosis of PKDL by detection of LD antigen in the skin tissue by punch biopsy using immunofluorescence technique; and, 6. To investigate leishmania antigens and anti-leishmania antibodies in urine before and after treatment of PKDL and evaluate possibility to use them as diagnostic tools.