Disease at a Glance

Necrobiotic xanthogranuloma (NXG) is a rare, chronic form of non-Langerhans histiocytosis usually found in older adults. Xanthogranulomas are lesions made of immune cells known as a histiocytes. The term necrobiotic refers to the buildup of broken down collagen fibers that can be seen under a microscope. The typical lesion is a yellow, thickened, or raised lesion (plaque) located around the eyes. In most cases the lesions are associated with conditions in which abnormal proteins are found in the blood (monoclonal gammopathies). NXG is also sometimes associated with blood cancers or lymphoproliferative disorders. Approximately 50% of people with NXG have problems with their eyes, such as burning or itching, blurred vision, double vision, bulging of the eyeball, drooping of the eyelid, and restricted eye movement. In most cases, other parts of the body, such as the trunk, legs, face, and arms, are also involved. Internal organs may sometimes be affected.
Estimated Number of People with this Disease

This section is currently in development.

What Information Does GARD Have For This Disease?

Many rare diseases have limited information. Currently GARD is able to provide the following information for this disease:

*Data may be currently unavailable to GARD at this time.
When do symptoms of this disease begin?
This section is currently in development. 


This section is currently in development. We recommend speaking with a doctor to learn more about this disease. 


This section is currently in development. 

Last Updated: Nov. 8, 2021