By Gary M. White, MD
This page contains links to diseases that may present as a solitary, slowly growing, red, scaly spot. Note that these conditions rarely occur in children.
Nummular Eczema. Although usually multiple, eczema may present as a solitary lesion. Note the redness and scale uniformly throughout the lesion compared with tinea below.
Tinea Corporis. Note the active edge.
Impetigo. Occasionally, a single lesion of impetigo can look similar, but usually there is honey-colored crust and erosions.
Superficial Basal Cell Carcinoma
Squamous Cell Carcinoma
Amelanotic Lentigo Maligna and Melanoma
Cutaneous T-Cell Lymphoma