Efficacy of Methylene Blue Mediated Photodynamic Therapy for Primary Localized Cutaneous Amyloidosis Treatment in Asians

Inclusion Criteria: * Patients, aged \> 18 years old with lichen amyloidosis diagnosed by using clinical presentation and pathological findings. Exclusion Criteria: * Those with systemic disease associated cutaneous amyloidosis * Pregnancy or lactating woman * Those who are allergic to urea, olive oil * Those who are photosensitive to ultraviolet radiation * Those who had been previously treated with any of which -medications, radiation, laser within 3 months and 1 month for topical therapy