Lymphocytosis

Lymphocytosis is a condition characterized by an increase in the number of white blood cells called lymphocytes in the blood. It can range from mild to severe and is usually seen as an increase in the number of lymphocytes in the peripheral blood. Symptoms can include fever, fatigue, swollen lymph nodes, and increased susceptibility to infections. It can develop gradually or suddenly, and may be caused by a variety of conditions, including infections, autoimmune disorders, and certain types of cancer.