What type of cyst is contagious?

Contagious cysts are typically associated with infections, such as those caused by parasites or bacteria. An example is a cyst formed by the Echinococcus parasite, which can be transmitted through contact with contaminated soil or feces. Additionally, some skin cysts, like those related to viral infections (e.g., molluscum contagiOSum), can spread through direct skin contact. However, most common cysts, like sebaceous cysts or ganglion cysts, are not contagious.