Fever symptoms are quite common in patients with lymphoma, which we refer to as B symptoms. The pattern of their fevers is primarily low-grade, occurring more frequently in the afternoon or evening. Unlike ordinary bacterial infections, fevers in these patients do not respond well to anti-inflammatory drugs, but they do respond better to steroid treatment for reducing fever. However, if the lymphoma is not under control, their fever will repeatedly recur. Corresponding cooling treatments can reduce the temperature, but the fever will reoccur repeatedly. Only when the lymphoma and tumor are under control will the fever symptoms start to improve.