Dermatitis Herpetiformis

The image displays a cluster of erythematous papules and vesicles with significant excoriations on the skin. Which of the following is the most likely diagnosis?

A 35-year-old woman with a 3-year history of dermatitis herpetiformis (confirmed by skin biopsy showing granular IgA at the dermal–epidermal junction) presents with persistent skin lesions despite strict adherence to a gluten-free diet for 8 weeks. She reports that the lesions have not improved and remain intensely pruritic. Her small-bowel biopsy confirms villous atrophy consistent with celiac disease. Which medication is most appropriate to provide rapid symptomatic relief while the gluten-free diet takes full effect?

A 28-year-old man presents with a 6-month history of intensely pruritic vesicles and papules on the extensor surfaces of his elbows, knees, and buttocks. The lesions are grouped and recurrent. He reports that scratching provides temporary relief but lesions reappear within days. On examination, excoriations and crusting are prominent; intact vesicles are rare. He mentions a lifelong tendency to loose stools and abdominal bloating after wheat-containing meals. Serum tissue transglutaminase (tTG) IgA is elevated. Skin biopsy shows granular IgA deposits at the dermal–epidermal junction. What is the most likely diagnosis?

A 28-year-old man from rural Maharashtra presents with a 6-month history of intensely pruritic vesicles and papules on the extensor surfaces of his elbows, knees, and buttocks. The lesions are grouped and recurrent. He reports a gluten-rich diet. Histopathology shows subepidermal blistering with neutrophilic microabscesses at the dermal–epidermal junction. Direct immunofluorescence (DIF) reveals granular IgA deposits at the basement membrane zone. Serology is positive for tissue transglutaminase (tTG) antibodies. What is the most likely diagnosis?

A 35-year-old woman from Delhi presents with a 4-month history of recurrent grouped vesicles and severe pruritus on her extensor elbows and knees. She has been managing symptoms with topical corticosteroids with minimal relief. Skin biopsy confirms subepidermal blistering with neutrophilic microabscesses. Direct immunofluorescence shows granular IgA deposits at the basement membrane zone. Upper GI endoscopy reveals villous atrophy consistent with celiac disease. She is counseled on a gluten-free diet. What is the most appropriate pharmacological agent to provide rapid symptomatic relief while the gluten-free diet takes effect?