I was diagnosed with pityriasis lichenoides chronica over 11 years ago. I have tried all sorts of different medications. I started taking methotrexate about 6 weeks ago, but haven't seen any changes yet. How long does it usually take for this medication to take effect? What are some other treatment options? What are the chances that there will be a cure for this condition? Can it spontaneously resolve? If the condition does resolve, what are the chances that it will come back?