Round/oval, erythematous pruritic macules, and patches, located on his lower limbs mostly on his buttocks, forearms, and hands
Cutaneous hemophagocytosis/superficial and deep perivascular dermal infiltrate interface dermatitis and necrotic keratinocytes/necrotic keratinocytes concentrated at the acrosyringium/deep dermal infiltrate composed of histiocytes
Naranjo = 5
Discontinuation of metformin oral prednisone for 2 weeks had no effect
Itching and burning sensation over the right leg accompanied by the appearance of blisters, ulcerations, and erythema after starting metformin and also after gliclazide, vildagliptin, empagliflozin, and liraglutide
Lichenoid drug eruption
NA
Discontinuation of metformin
7
Our case
43/male
Multiple well-defined erythematous to violaceous plaques with a central dusky appearance in association with bulla formation over the chest, extremities, genitalia, and lips
Vacuolar interface dermatitis, apoptotic keratinocytes, and pigment incontinence associated with eosinophils infiltration