Hodgkin's disease is a type of lymphoma Lymphoma is a general term for cancers that develop in the lymphatic system.   Hodgkin's disease, discovered by Thomas Hodgkin in 1832, is one type of lymphoma. 

According to the U.S. National Institutes of Health, lymphomas account for about five percent of all cases of cancer in the United States, and Hodgkin's disease in particular accounts for less than one percent of all cases of cancer in the United States. described by Thomas Hodgkin Thomas Hodgkin (1798 - 1866), British physician who was the first to describe Hodgkin's disease in 1832. He was a Quaker. 


Epidemiology 
Unlike other lymphomas, whose incidence increases with age, Hodgkin's lymphoma has a bimodal incidence The incidence of disease is defined as the number of new cases of disease occurring in a population during a defined time interval. The number is useful to epidemiologists because it is a measure of the risk of disease. 

Symptoms 
Swollen, but non-painful, lymph nodes Lymph nodes are components of the lymphatic system. Clusters of lymph nodes are found in the underarms, groin, neck, chest, and abdomen. Lymph nodes act as filters, with an internal honeycomb of connective tissue filled with lymphocytes that collect and destroy bacteria and viruses. When the body is fighting an infection, these lymphocytes multiply rapidly and produce a characteristic swelling of the lymph nodes.

About one-third of people with Hodgkin's disease may also notice some systemic symptoms, such as low-grade fever, night sweats, weight loss, itchy skin, or fatigue Fatigue is a feeling of excessive tiredness or lethargy, with a desire to rest, perhaps to sleep. Often it causes yawning. 

It is typically the result of working, mental stress, jet lag or active recreation, but also from boredom or disease, or simply lack of sleep. It may also have chemical causes, such as poisoning or mineral or vitamin deficiencies. 

Fatigue can also be quite dangerous when performing certain duties that require constant concentration, such as driving a vehicle. When someone is sufficiently fatigued, they may experience microsleeps that can cause them to lose concentration.