Since jan 2023 my wife  got white patches in the inner side of her mouth. Within weeks she started developing some purple spots on her neck, wrists, inner elbows, behind the knees, on the torso and the breast area. Slowly the white spots became sensitive to spices and hot food. And purple spots started itching. She consulted a dermatologist, and was prescribed tofatas 5 mg twice a day for four months but it hasn't helped. Now i want to know how to treat this because it is worsening. Please help.