Granuloma annulare | Genetic and Rare Diseases Information …

Granuloma annulare (GA) is skin disorder that most often causes a rash with red bumps (erythematous papules) arranged in a circle or ring pattern (annular). GA is not contagious and is not cancerous. The rash may be localized or generalized. Localized GA is the most common form of GA (75% of the cases) and usually affects the forearms, hands, or feet.

https://rarediseases.info.nih.gov/diseases/6546/granuloma-annulare