A 56-year-old man complains of enlarged lower lip, pain induced by hot, sour, salty, and bitter foods, and lips gluing together in the morning. The lower lip has been gradually enlarging and developing lumps his whole life. On examination: the lower lip is enlarged. The middle third of the Klein’s zone presents with several small red dots with the openings that discharge clear drops. The red border is dry and peeling, there are fissures and erosions. What is the most likely diagnosis?