Whipple Disease With Central Nervous System Involvement.

BACKGROUND

Whipple disease is a rare, chronic, and systemic infectious disease caused by the bacterium Tropheryma whipplei. It can be mistaken for numerous other diseases, including seronegative rheumatoid arthritis and tropical sprue, and it is known to occur concurrently with giardiasis. Whipple disease can be fatal if not promptly recognized and treated.

CASE PRESENTATION: A 53-year-old male presented with an 8-month history of persistent diarrhea, memory distortion, visual disturbances, 30-lb weight loss, and intermittent bilateral hand and knee arthralgias. An autoimmune evaluation for arthralgia was negative. Polymerase chain reaction testing of duodenal biopsy tissue and cerebrospinal fluid was positive for Tropheryma whipplei.

CONCLUSIONS

Whipple disease should be considered in the differential diagnosis when patients present with chronic seronegative arthritis, gastrointestinal abnormalities, and cognitive changes. This case, along with others reported in the literature, point to the importance of additional testing for Whipple disease, even when a concurrent infection, such as giardiasis, has been identified.