Repeated USMLE Questions- Medical Question of the Day- 36

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Q- A 30-year-old man presents to the clinic complaining of recurrent bouts of diarrhea accompanied by bloating over the past few years. He also reports having itchy vesicles around the extensor surfaces of his upper and lower extremities. The rest of the clinical examination is normal.

What is the skin condition most likely present in this patient?

A- Dermatitis herpetiformis

B- Psoriasis

C- Rosacea

D- Seborrheic keratosis

E- Shingles (herpes zoster)

Answer and Explanation 

Recurrent diarrhea and bloating suggest celiac disease. Intensely pruritic (itchy) vesicles on extensor surfaces (elbows, knees, buttocks) are characteristic of dermatitis herpetiformis, the primary skin manifestation of celiac disease. It is caused by IgA deposition in the dermal papillae.

Psoriasis presents with well-demarcated plaques with silvery scale, not vesicles. Rosacea affects the face with flushing and papules. Seborrheic keratosis is a benign “stuck-on” lesions in older adults. Shingles is characterized by painful, dermatomal vesicles, usually unilateral.

The correct answer is A

Key takeaway:
👉 Celiac disease + pruritic vesicles on extensor surfaces = dermatitis herpetiformis.

 

Read the Book, Repeated USMLE Questions Step 2 CK 

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56 thoughts on “Repeated USMLE Questions- Medical Question of the Day- 36”

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  31. A

  32. Derm. Herpetiformis

  37. A- Dematitis herpetiformis

  39. dermatitis herpetiformis

  41. A.skin manifestation with diarrhea seen in celiac sprue

  43. Dermatitis herpetiformis

  44. A is the answer.Their is gluten sensitivity.

  45. Dermatitis herpetiformis

  46. The answer is A- dermatitis herpetiformis

  47. dermatitis herpetiformis

  48. A. Dermatitis herpetiformis

  51. A. Dermatitis herpetiformis

  52. A. Dermatitis herpetiformis

  54. A

  55. A

  56. Dermatitis herpetiformis

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