Initial Cerebral Venous Thrombosis Revealing Extramembranous Glomerulonephritis Secondary to Primary Sjögren's Syndrome: A Rare Case Report and Literature Review

Sjögren's syndrome (SS) is an autoimmune exocrinopathy characterized by systemic manifestations, including neurological and renal involvement. We present the case of a 36-year-old female patient in whom cerebral venous thrombosis (CVT) revealed primary SS, associated with extramembranous glomerulonephritis (EMGN), a rare manifestation. This article highlights the importance of considering SS as an etiology of CVT and performing systematic renal screening in this context. A review of the literature emphasizes the pathophysiological complexity of extra-glandular manifestations of SS and the necessity for early diagnosis.