Table 5.

Comparison of MMP with other subepithelial blistering dermatosis

Entity	Clinical features	DIF	IIF on salt-split substrate	Immunoblotting	Electromicroscope
MMP	Multiple mucosal involvement, scarring, progressive	Linear IgG, IgA and/or C3 along BMZ	IgG antibodies bind to epidermal or dermal side	BP180, BP230, laminin 5, integrin, type VII collagen	Lamina lucida, sub-lamina densa
BP	Rare mucosal involvement and scarring	Linear IgG and/or C3 along BMZ	IgG antibodies bind to dermal side	BP180, BP230	Intra-lamina lucida
EBA	Blisters induced by trauma	Linear IgG along BMZ	IgG antibodies bind to dermal side	Type VII collagen	Sub-lamina densa
BSLE	Rare scarring, LE symptoms	Linear or granular IgG, IgA and C3 along BMZ	IgG antibodies bind to dermal side	Type VII collagen	Sub-lamina densa