Cases of cranial nuchal bursitis associated with Borrelia burgdorferi infection have not been thoroughly described. Here, we describe the case of a 17-year-old mare that was presented for low head carriage, dull demeanor, and resistance to haltering. Imaging supported a diagnosis of nuchal bursitis, and bursoscopy with surgical debridement of the nuchal bursa was performed. B. burgdorferi was identified by molecular diagnostics in serial samples of the bursal fluid, with no other organisms identified. Serology revealed significant elevation in antibodies directed against OspA of B. burgdorferi, but not the typical infection markers, OspC and OspF. Intravenous ceftiofur was administered for 80 days, and the nuchal bursa was directly injected with ceftiofur. The mare recovered and was able to return to work with no recrudescence of clinical signs over the following year to date. Infection with B. burgdorferi should be considered as a differential in cases of septic nuchal bursitis.

颅颈滑囊炎病例 伯氏疏螺旋体感染没有被彻底描述。在这里，我们描述了一头 17 岁母马的案例，该母马因低头姿态、呆板的举止和对露背的抵抗而出现。影像学支持颈项滑囊炎的诊断，并进行了滑囊镜手术清创颈项滑囊。伯氏疏螺旋体在连续法氏囊液样本中通过分子诊断鉴定出，没有鉴定出其他生物体。血清学显示针对 OspA 的抗体显着升高伯氏疏螺旋体，但不是典型的感染标志物，OspC 和 OspF。头孢噻呋静脉注射80天，颈部滑囊直接注射头孢噻呋。母马康复并能够重返工作岗位，在接下来的一年中临床症状没有复发。感染伯氏疏螺旋体 应将其视为感染性颈部滑囊炎的鉴别诊断。