Which of these four feet shows tinea?
Answers:
A = This is allergic contact dermatitis – symmetrical and bilateral, affecting the soles. It was due to allergy to azo dyes present on the insole for his shoes.
B = This is bullous tinea pedis – some dermatophyte fungi can be severe enough to produce blistering, especially Trichophyton mentagrophytes
C = This is palmoplantar pustular psoriasis pustular psoriasis – note the pustules and the conspicuous rusty red dots typical of this condition.
D = This is plaque psoriasis of the soles – note the well-defined edge. Full skin examination may show typical psoriasis elsewhere (elbows, knees, scalp, nails).
If there is even the slightest suspicion of tinea, take scrapings!
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Comments
27 July 26
Ayinke
I would have picked A as my answer. I don't think I've ever seen a bullous tinea infection except kerion which is common on the scalp.
20 July 26
Kylie
Any tips for taking a scraping when the rash is moist or purulent as in the bullous one?
24 July 26
DermNet
Look for a dry area that is scaly - often between toes
19 July 26
Nora
DDx for all photos is Psoriasis ,variety of manifestations.
But good to see also this type of tinea pedis.
19 July 26
Azzedine
thank you
18 July 26
KESAVAN
GOOD TIPS FOR SKIN CASES.
17 July 26
Flo
Would have been interesting to see the whole feet,
especialy for answer B,
not just the blisters.
16 July 26
graciela
Nice training, though tinea also usually shows weel-defined edge
16 July 26
Ban
Never thought of it great cases
16 July 26
Dr Dharmesh
Thats the first option I ruled out. :)
16 July 26
David
Pleased to have got it right, but I have seen bullous TP before. There is no doubt that Ps and TP can appear near identical. Always scrape!
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