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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 929 - 14th January 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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The patient is a 60 year old black woman with a shave biopsy from a lesion on the left lateral malar region.

Case posted by Dr. Mark Hurt


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Guest Dr.Yüksel Okumuş

Posted

Ochronosis with subepidermal blister (exogenously induced ?)

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Eman El-Nabarawy

Posted

Hydroquinone induced colloid millium and ochronosis.

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Guest Romualdo

Posted

Yes, hydroquinone induced exogenous ochronosis with subepidermal blister.

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Exogenous ochronosis plus subepidermal blister disease. Maybe the patient abused of hydroquinone for a subepidermal bullous skin disease like bullous lupus. Clinical history is very important.

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Robledo F. Rocha

Posted

Exogenous ochronosis, maybe a complication of antimalarial drug used for a photodermatitis.

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Dr. Mona Abdel-Halim

Posted

The best word that describes this case is what Dr Carr said: a big WOW :-))) exogenous ochronosis... Possibly complicating hydorquinone.

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Mark A. Hurt MD

Posted (edited)

Yes, this is exogenous ochronosis. It was such a dramatic example, I had to share. Clinically, it was also thought to be exogenous ochronosis. I wasn't sure what the bulla meant, and never received any insight to its meaning.

Edited by Mark A. Hurt MD
Typo

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