Discussion in 'Spot Diagnosis' started by bb100, Mar 16, 2013.
What is the most likely diagnoses?
Erythema ab igne - showing charecteristic erythematous reticular pattern, interspersed with pale areas ( which are atrophic areas of skin ). In chronic stage it will become brownish-black.
Xtra Edge from Goodheart's same site differential diagnosis
etiology / cause - Chronic heating causes injury to the skin, though this is not well characterized.
Infra red in the solar spectrum may play a role in chronic photodamage, but it is difﬁcult to determine what that role is.
location - Chronic heat damage to the skin occurs on the shins and elsewhere at sites habitually warmed by focal sources of heat – a condition known as erythema ab igne.
physical sign - Brownish-red reticulate pigmentation is the dominant physical sign , but keratoses and even squamous cell carcinoma can also occur at involved sites.
Erythema ab igne.
I agree with you. this case looks like erythema ab igne
in this case Livedo pattern of the lower legs with purpura and subcutaneous nodules are seen .
what may be diferential diagnosis?
subcut. nodules may be erythema nodosum and marry it with livedo - the first thing that comes to mind is everything under the umbrella of 'vasculitis'
- polyarteritis nodosa
- rheumatoid arthritis
- antiphospholipid antibody syndrome
in my part of the world
and hepatitis b and c ( cryoglobulinemia, esp. sec to hep c is known to giv this pattern and is also ass. with some cases of polyarteritis nodosa )
erythema ab igne
Vasculitis Differential Diagnosis
Toasted skin syndrome
Correct Answer olyarteritis nodosa
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