Multiple Myeloma Support Group
Multiple myeloma (also known as MM, myeloma, plasma cell myeloma, or as Kahler's disease after Otto Kahler) is a type of cancer of plasma cells, immune system cells in bone marrow that produce antibodies. Its prognosis, despite therapy, is generally poor, and treatment may involve chemotherapy and stem cell transplant. It is part of the broad group of diseases called...
The disease alone can run your temperature all over the place.
If you really want the some of the explanation from the world of science and medicine read about I -L6 or interleukin 6 and it's role in your body regarding temperature control.
further explanation is above my pay grade
regards, Tom