Lymphadenopathy due to infectious mononucleosis.
Lymphadenopathy is a symptom that is defined as an enlarged lymph node(s). Its causes are wide and varied, but include (although it is worth noting that this is not a comprehensive list):
- Autoimmune diseases/inflammatory diseases, e.g., autoimmune lymphoproliferative syndrome, dermatomyosis, graft-versus-host disease (GVHD), Kawasaki's disease, rheumatoid arthritis (including its juvenile variant), sarcoidosis, Sjögren's syndrome and systemic lupus erythematosus
- Cancers and lymphoproliferative disorders such as metastatic solid tumours, lymphomas (both Hodgkin's and non-Hodgkin's), Castleman's disease, lymphocytic leukaemia (including acute, chronic and hairy cell) and malignant histiocytosis.
- Familial Mediterranean Fever
- Histiocytosis X
- Hypertriglyceridaemia (severe)
- Infectious diseases, including bacterial (brucellosis, cat-scratch disease, diphtheria, glanders, leprosy, melioidosis, plague, Q-fever, syphilis, tuberculosis and tularaemia), fungal (e.g., histioplasmosis), parasitic (e.g., leishmaniasis, toxoplasmosis, trypanosomiasis), viral (e.g., with herpesviruses such as herpes simplex, Epstein-Barr virus/cytomegaloviruses [leading to infectious mononucleosis], chickenpox, roseola, Kaposi's sarcoma-associated herpesvirus [KSHV], hepatitis A, B, C, D and E, adenovirus, HIV, measles, rubella, etc.).
- Lipid storage diseases like Fabry's