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In this section we have spot diagnoses posted on a daily basis since June 2010, now over 4000! You can review the archived cases and read the suggested diagnoses by users and the final comment by the contributors.
Case are uploaded each week day by 10 am UK time with the correct diagnosis will generally be posted at 8 pm UK time. Why not view the most recent spot diagnosis and proffer a diagnosis?

Case Number : Case 1124 - 14th October Posted By: Guest

Please read the clinical history and view the images by clicking on them before you proffer your diagnosis.
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34 year old woman with 2 week history of fevers and chills who subsequently presents with violaceous plaques over the arms. Many plaques show vesiculation in the center. During her febrile illness, the patient had been treated with ampicillin.

Case posted by Dr.Uma Sundram.

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User Feedback

Robledo F. Rocha


The diffuse infiltrate and case history favor Sweet’s syndrome, but I’d expected a pseudobullous lesion due to marked papillary dermal edema. Conversely, I didn’t see all that dermal edema, and there’s a true subepidermal blister with signs of re-epithelialization and scattered single necrotic keratinocytes. So, I add Sweet’s-like drug reaction.

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