Hi I have been getting several red and white patches some times on hand and they are very itchy . I have shown several dermatologist and they all say its due to UV rays .however I have been taking several medications but no cure . Have taken allegra tab , applied Hydramoist lotion , tab dazit , tab prugo , tab canditral , onabet and momatex cream . However all work for 2 days and the prob persist again . Also at my neck are I have red patches . Please advise