Shingles or Herpes Zoster is a viral disease which causes blisters over the surface of skin. It can be cured with the help of antiviral drugs. The treatment is most effective if it is started within 72 hours of appearance of this disease. With timely and appropriate medication, the disease is cured within a period of ten days. Since your husband is suffering from it for the past 6 weeks, you must go to the doctor once again. As the medication might not be working properly.