Discoid (nummular) eczema

Discoid (nummular) eczema

Discoid eczema is a type of atopic eczema, and as the name suggests, appears as coin-shaped patches and plaques of inflamed skin. In the acute phase (flares), lesions are red, crusty and intensely irritable. Later, these lesions progress towards a more scaly stage with ring-shaped or zonal lesions. As they fade, the skin may be left dry and pale.6 Approximately 20% of people with atopic eczema have discoid eczema.7

Discoid Eczema

Image source: DermnetNZ

The buttocks and extremities (particularly the backs of the hands) are the most common areas affected by discoid eczema.6,8,9 It can occur in both adults and children, and may not always be associated with itching.6, 10

It has been suggested that disrupted skin barrier function in people with discoid eczema leads to persistent infections with the bacteria Staphylococcus aureus.11

References

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UK/GEN/16/0051 Date of preparation: October 2016