Epstein-Barr virus infection associated with interstitial nephritis and chronic fatigue.

Severe renal disease in the setting of Epstein-Barr virus (EBV) infection is exceedingly rare. We report here the case of a 22-year-old man with acute EBV infection associated with severe interstitial nephritis. The patient developed chronic fatigue and chronic renal failure with a serological profile typical of primary EBV infection. Clinical improvement with anti-EBNA seroconversion occurred after acyclovir therapy. Our patient illustrates that chronic fatigue with major organ dysfunction and a serological profile of primary infection can be seen in chronic EBV infection. In such a case, acyclovir may prove beneficial.