A 48-year-old man from Mumbai presents with a 2-month history of pruritic papules on his dorsal hands, forearms, and anterior shins. On examination, he has shiny, polygonal, flat-topped purple papules with a white, lacy surface pattern. A skin biopsy is performed. Histopathology shows hyperkeratosis with a saw-tooth pattern, liquefactive necrosis of the basal layer, and a dense band-like lymphocytic infiltrate at the dermoepidermal junction. The patient denies oral involvement. Which of the following statements about this condition is most accurate?