Nummular dermatitis in Adult
Alerts and Notices
Synopsis

Nummular dermatitis is pruritic but may be less pruritic than other common diagnoses with scaly plaques (eg, tinea). Autoeczematization (widespread eczematous eruption secondary to triggers such as infection or severe localized eczema) and impetiginization (superinfection of impaired skin barrier) may be seen. Nummular dermatitis is most common in men, and the peak age of incidence is between 50 and 65 years. The second most common age range of incidence is 15-25 years.
Codes
ICD10CM:L30.0 – Nummular dermatitis
SNOMEDCT:
81418003 – Nummular dermatitis
Look For
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Diagnostic Pearls
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Differential Diagnosis & Pitfalls
- Allergic contact dermatitis
- Irritant contact dermatitis
- Tinea corporis
- Psoriasis
- Pityriasis rosea
- Seborrheic dermatitis – The distribution of lesions is often a helpful clue in distinguishing this entity from atopic dermatitis.
- Majocchi granuloma
- Lichen simplex chronicus
- Ichthyosis vulgaris
- Small plaque parapsoriasis
- Pityriasis rubra pilaris
- Secondary syphilis
- Pellagra
- Mycosis fungoides
- Glucagonoma syndrome
- Eczema craquele
- Crusted scabies (with severe immunosuppression)
Best Tests
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Management Pearls
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Therapy
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Drug Reaction Data
Below is a list of drugs with literature evidence indicating an adverse association with this diagnosis. The list is continually updated through ongoing research and new medication approvals. Click on Citations to sort by number of citations or click on Medication to sort the medications alphabetically.Subscription Required
References
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Last Reviewed:01/31/2017
Last Updated:03/28/2017
Last Updated:03/28/2017