MUC5AC and lupus erythematosus: Inchara et al. studied 37 cases of scarring alopecia and concluded that lupus erythematosus was the most common cause of scarring alopecia among Indian patients (49%), followed by LPP (41%), folliculitis and alopecia areata [9]. They found that epidermal atrophy, papillary dermal fibrosis and mucin and peribulbar inflammation were the most common histological features in their patients with DLE, and the common histological features of LPP were normal epidermis and peri-infundibular infiltrate [9].