%0 Case Reports %T A Rare Presentation of Guillain-Barré Syndrome With Associated Horner Syndrome: A Case Report. %A Irfan S %A Ganesan J %A Jain KV %A A P GA %A Ravichandran U %J Cureus %V 16 %N 3 %D 2024 Mar %M 38681326 暂无%R 10.7759/cureus.57188 %X Guillain-Barré syndrome (GBS) is an acute inflammatory polyradiculoneuropathy involving the peripheral nervous system. Autonomic dysfunctions are well-known complications of GBS and are major contributors to mortality. Autonomic dysfunctions are classically described during the acute phase of illness. In the literature, Horner syndrome as a manifestation of GBS has been reported in very few cases. Here, we describe a case of GBS with an acute presentation of flaccid paraparesis associated with unilateral Horner syndrome. Detecting the cause of acute flaccid paraparesis with unilateral Horner syndrome poses a diagnostic challenge, making it crucial for clinicians to maintain a heightened awareness for distinguishing between GBS and its variants, as well as other potential mimics.