Synonym(s)
Nummular dermatitis; discoid eczema
Definition
Chronic disorder characterized by pruritic, coin-shaped papules and plaques
Pathogenesis
Associated with xerosis, atopy, and venous stasis
Clinical manifestation
Papules or vesicles that coalesce to form confluent plaques on erythematous base; early lesions sometimes exudative and crusted; secondary infection may occur; necessitating systemic antibiotics; older lesions are dry, scaly, and excoriated from scratching; lower extremities and dorsum of hand most frequently affected areas
Differential diagnosis
Atopic dermatitis; tinea corporis; psoriasis; stasis dermatitis; pityriasis lichenoides; contact dermatitis; lichen simplex chronicus
Therapy
Corticosteroids, topical, high potency; prednisone for severe flares
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References
Aoyama H, Tanaka M, Hara M, Tabata N, Tagami H (1999) Nummular eczema: An addition of senile xerosis and unique cutaneous reactivities to environmental aeroallergens. Dermatology 199(2):135–139
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© 2004 Springer-Verlag
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(2004). Nummular eczema. In: Levine, N., Levine, C.C. (eds) Dermatology Therapy. A to Z Essentials. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-29668-9_1946
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DOI: https://doi.org/10.1007/3-540-29668-9_1946
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-00864-4
Online ISBN: 978-3-540-29668-3
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