Non-Hodgkin lymphoma

Non-Hodgkin's lymphoma (NHL) is a group of blood cancers.

Causes
Various infectious agents have been associated with (NHL), including Epstein-barr virus.

Chronic fatigue syndrome
A history of chronic fatigue syndrome was associated with an increased risk of certain Non-Hogkin's lymphomas, specifically diffuse large B cell lymphoma, marginal zone lymphoma, and B cell NHL not otherwise specified.