Histiocytosis

Histiocytosis is a rare condition characterized by an overproduction of certain immune cells called histiocytes, which normally help the body fight infections. When these cells grow excessively or accumulate abnormally, they can cause damage to tissues and organs, leading to a variety of symptoms depending on where they occur. It can affect different parts of the body, such as bones, skin, or organs, and may be localized or involve multiple systems. The exact cause is often unknown, but it’s believed to involve abnormal immune response or genetic factors, and treatment varies based on the type and severity of the disease.