Symptoms can be aggravated by environmental factors like ... with a prevalence of 1-5% in Asia. Nummular Dermatitis, featuring coin-shaped patches, has a prevalence of two cases per 1000 people.

Several other skin conditions can cause similar-looking rashes, like Lyme disease, pityriasis rosea, psoriasis, and nummular ...

Nevertheless, AD can sometimes have a different morphology (ie, a nummular, prurigo-like, or seborrheic dermatitis–like morphology) and can occur with normal levels of total and allergen ...