Hodgkin's lymphoma is characterized by the presence of Reed-Sternberg cells. It is classified into five subtypes based on cell morphology. Hodgkin's lymphoma most often presents as painless enlargement of single or adjacent lymph nodes and commonly spreads in an orderly fashion. Investigations include CBC, ESR, LDH, imaging and bone marrow biopsy. Treatment involves chemotherapy such as ABVD or MOPP regimens depending on disease stage and prognosis. Late effects of treatment can include leukemia, second malignancies, and organ damage.