dermatologic disorders
Nummular Dermatitis
Diagnosis of Nummular Dermatitis
Clinical evaluation Diagnosis of nummular dermatitis is clinical and based on the characteristic appearance and distribution of the skin lesions. Patients should be evaluated for atopy. In nonatopic patients, allergic contact dermatitis should be considered, and patch testing may be helpful. Differential diagnosesinclude Psoriasis : Psoriatic plaques are typically more sharply demarcated. Impetigo and Ecthyma : Impetigo typically first manifests with yellow crusts. Overview of Dermatophytoses : Tinea typically first manifests with annular plaques with advancing scale and central clearing over time. 