70 yrs,came at opd with this patch with slight feeling of soreness which developed within 2 wks. No h/o of immediate past medication either local or systemic. Pl.diagnose with dd

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Dr. Sankar The visual shows reddening of the skin in areas of exposed to sunlight more favour to PELLAGRA Here sunburn subsides giving this picture. Symmetrical rash with clear edge confirm the diagnosis. DD Photo DERMATITIS ACTINIC KERATOSIS Zinc deficiency CONTACT DERMATITIS Solar DERMATITIS Lupus Erythematosus.

Thanks doctor Kumar
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If it is pellagra, remember 3 D s that is dermatitis, diarrhoea and dementia. Therapeutic trial with high doses of nicotinamide ( 100 to 500 ) can be tried for confirming the diagnosis.

But he has no diarrhoea & dementia doctor
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Occupational hx?? Photosensitivity of long duration with itching might have resulted these type of skin changes.

Thanks
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Photodermatitis

Pellagra, h/o chronic alcoholism or maize intake s there?

his principal food is rice & he is non-alcoholic
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Lupus erythmatous?

Thanks
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photo dermatitis

Thanks
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Add b complex.usefull.

Probable diagnosis please.
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Contact dermatitis /photo dermatitis

Solar dermatitis

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