Tumid lesion on the nose with scarring alopecia.

36 year old male patient presented with this tumid lesion on the nose since few months. On examination he also had this violaceous patch of scarring alopecia which he had not noticed. He also complained of similar lesions on his earlobe which spontaneously disappeared. No other significant history could be elicited and he did not have similar lesions elsewhere. What is your diagnosis?