Gumma refers to a soft, tumor-like growth that may occur in various tissues of the body, often associated with advanced stages of syphilis. It is a type of granulomatous lesion that usually appears in the tertiary stage of syphilis, which can occur years after the initial infection if left untreated.

Gumma typically manifests as a rubbery, painless mass that can develop in a variety of locations, including the skin, bones, and internal organs. These lesions may vary in size and can cause damage to the affected tissues if not addressed. For instance, when they occur in the skin, they may lead to ulcerations, while in the bones, they can result in osteitis or localized bone destruction.

Treatment for gumma primarily involves the administration of antibiotics, particularly penicillin, to address the underlying syphilis infection. If diagnosed and treated early, the prognosis is generally favorable, and many lesions can heal completely, preventing further complications. However, untreated gumma can lead to more serious health issues, emphasizing the importance of early detection and treatment in syphilis infections.