“…10 Factors such as the duration of the disease, Figure 1 (a) Complete nail dystrophy and multiple milia in a 60-year-old man with EBA, (b) onycholysis, subungual hyperkeratosis, multiple bullae in a 75-year-old woman with BP, (c) onycholysis, subungual hyperkeratosis, multiple bullae in a 70-year-old man with BP, (d) subungual hyperkeratosis and nail plate discoloration in the left great toe and 3rd toenail of a 60-year-old man with BP, (e) multiple hemorrhagic bullous lesions in the periungual skin of a 60-year-old man with BP, (f) multiple nail dystrophy in a 50-year-old woman with EBA, (g) Beau's lines in the nails of a 47-year-old man with MMP, (h) subungual hyperkeratosis and nail scarring in a 74-year-old man with EBA, (i) onycholysis and nail discoloration in fingernails of a 53-year-old female with MMP, (j) onychomadesis in the greater toenail in a 38-year-old man with BP, (k) onycholysis, subungual hyperkeratosis, and multiple hemorrhagic blisters in a 70-year-old man with BP, (l) longitudinal melanonychia in the finger of a 60-year-old man with EBA severity, and the involved nail component can determine the extent of nail abnormality in SEABD. 10,12,16 Formerly, Habibi et al reported that nail involvement in PV has been associated with an extensive and severe form of the disease, as paronychia is a sign of exacerbation. 10,12 Previous reports on SEABD describe nail abnormalities on fingernails, 13,16,17,22,31,33 toenails, 14,20,21,29 or both.…”