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In this section we have spot diagnoses posted on a daily basis since June 2010, now over 1700! You can review the archived cases and read the suggested diagnoses by users and the final comment by Dr Uma Sundram, the Editor-in-Chief and main spot diagnosis host. Case are uploaded each week day by 10 a.m. UK time with the correct diagnosis will generally be posted at 8 p.m. UK time. Why not view the most recent spot diagnosis and proffer a diagnosis?

Case Number : Case 4047 - 26 July 2022 Posted By: Uma Sundram

Please read the clinical history and view the images by clicking on them before you proffer your diagnosis.
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66 year old female with tender non blanchable red purple purpura/thin plaques.


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Eman El-Nabarawy

Posted

Urticarial vasculitis..

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Anil Patki

Posted

Upper derma edema and mixed perivascular and interstitial infiltrate with prominence of eosinophils are the salient features. Infiltrate also extends into the panniculus. Spider bite reaction (loxoscelism) comes to my mind considering that the lesion is purpuric. Other possibilities are Wells syndrome, insect bite reaction and drug hypersensitivity. Hematological investigations to rule out hypereosinophilic syndrome are desirable along with clinical history and correlation.

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Krishnakumar subramanian

Posted

dermal edema with perivascular lymphocytes and eosinophils

IBA

urticarial phase of BP

Urticaria

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Uma Sundram

Posted

Urticarial vasculitis. DIF is negative.

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