What is pel-ebstein fever?

HL fever: http://en.wikipedia.org/wiki/pel-ebstein_fever a fever associated with hodgkin's lymphoma.

This a fever: That is associated with hodgkin's lymphoma. It is described as a cyclical fever that will become more frequent over a period of days and then decrease in frequency just as fast. While experts argue whether this really exists, it is not a danger sign of anything else, rather just a symptom of the lymphoma. The fever is treated with anti inflammatories or with shrinkage of the tumor.