Dermatology Practical & Conceptual

Nodules on the right ear

Case report A healthy 17-year-old boy with a one-year history of asymptomatic, slowly enlarging nodules affecting his right ear was seen. The patient’s past medical history was unremarkable, he was not immunosuppressed, he was not taking any d…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Toxic Erythema?

“Toxic erythema: Red or pinkish color of the skin, if localized, probably due to external cause; if generalized, frequently of internal origin such as derangement of the gastrointestinal tract; ingestion of drugs or antitoxin.” Knowles…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Tricho-, pilo-, folliculo- ?

“pilo- [L. pilus]. Combining form indicating hair. . . . tricho- [Gr. thrix, trichas, hair]. A prefix denoting a relationship to hair. . . . follicle- [L. folliculus, little bag]. A small secretory sac or cavity.” Tabers Cyclopedic Me…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Reactive Perforating Collagenosis?

…e case for chondrodermatitis nodularis helices, picker’s nodules, surfer’s nodules, and nodules that form at the base of an amputation stump; the trauma in those conditions, however, results from something other than scratching. In short,…