Granuloma annulare (GA) is a benign granulomatous skin disease. Subcutaneous granuloma annulare is a rare variant in adults, predominantly affects women and typically involves hands. Differential diagnosis should be made with rheumatoid nodules, which frecuently pose a challenge because of the clinical and histological resemblance. Histopathologically, subcutaneous granuloma annulare is a necrobiotic non-infectious granuloma surrounded by chronic inflammatory infiltrate. Treatment is not standarised, although topical or intralesional stereoids and surgery are used.

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Erythroderma is complex to diagnose and usually attributed to medications or pre-existing disorders, including psoriasis and dermatitis. Here we report a case of allergic contact dermatitis (ACD) from Solvent Yellow 33 in an argan oil product applied as a treatment for psoriasis, manifesting as erythroderma.

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