Which statement is true about granuloma annulare?

Granuloma annulare is indeed often associated with diabetes, making this statement true. This skin condition is characterized by the formation of ring-like lesions and can be seen more frequently in individuals with certain underlying conditions, including diabetes mellitus. Research has suggested a relation between granuloma annulare and various forms of diabetes, particularly type 1 diabetes.

The other statements do not accurately reflect the nature of granuloma annulare. There is no proven infectious cause of granuloma annulare, which distinguishes it from many other skin diseases that are caused by infections. While many cases of granuloma annulare do resolve spontaneously, they typically do not do so quickly, and the duration can vary significantly among individuals. Lastly, granuloma annulare is not contagious; it does not spread through direct contact or any other means as it is not caused by infectious agents. Understanding these aspects helps clarify the nature of granuloma annulare and its associations, particularly regarding diabetes.