Bullous pemphigoid associated with acquired hemophilia A: A case report

Figure 1 Clinical feature. Ecchymosis, blisters and blood blisters on the extremities. A: Ecchymosis and blood blisters on the swollen right upper extremity. B: Blisters and blood blisters on the left wrist. C: Bean-sized blood blisters on the right forearm. D: Ecchymosis on the left upper extremity.

Figure 2 Hematoxylin and eosin staining. Subepidermal blister (red arrow), which contains eosinophils (yellow arrow) and infiltration of eosinophils around small vessels in the dermis. A: Hematoxylin and eosin (HE) × 10; B: HE × 40; C: HE × 100.

Figure 3 Direct immunofluorescence. Linear typical deposition of complement C3 along the dermo-epidermal junction.