Tolosa-Hunt Syndrome as the Initial Presentation of Systemic Lupus Erythematosus.

Tolosa-Hunt syndrome (THS), also known as painful ophthalmoplegia, recurrent ophthalmoplegia, or ophthalmoplegia syndrome, is described as severe and unilateral peri-orbital headaches associated with painful and restricted eye movements. THS is an uncommon disorder due to granulomatous inflammation of the cavernous sinus. Although THS is primarily idiopathic, it has rarely been reported in association with systemic lupus erythematosus (SLE). This case report describes a unique case of THS presenting as the initial manifestation of SLE, a multi-system autoimmune disease. We present a detailed case report of a 54-year-old female patient who presented with THS with the classical symptoms of THS including unilateral headache, double vision, and orbital pain. A cranial nerve examination revealed right oculomotor nerve palsy with the inability to adduct, raise, or depress her right eye. A detailed clinical examination revealed alopecia areata and erythematous macular lesions on her right earlobe. Laboratory investigations were unremarkable except for an increased erythrocyte sedimentation rate (ESR). Diagnostic investigations, including MRI and serological tests, were conducted to explore the underlying causes and systemic involvement. The patient's MRI showed characteristic findings consistent with THS, while serological tests revealed positive antinuclear antibodies, anti-ds-DNA antibodies, and anti-Smith antibodies and low complement levels leading to a concurrent diagnosis of SLE. There were no other systemic manifestations of lupus at the time of presentation.  Treatment with high-dose corticosteroids led to rapid improvement in ocular symptoms and headaches. Maintenance immunosuppressive therapy was initiated for the management of SLE. The patient had no relapses on follow-up. This case report underscores THS as a potential initial manifestation of SLE. It highlights the need for comprehensive diagnostic evaluation in patients presenting with atypical cranial neuropathy to consider systemic autoimmune disorders like SLE. Early diagnosis and management are crucial for improving outcomes in such intertwined pathologies. This case emphasizes the need for clinicians to be aware of the possibility of THS as the initial manifestation of SLE. This extended abstract provides a comprehensive overview of the article, laying out the significance of the case in broadening the clinical understanding of the overlap between localized inflammatory syndromes and systemic autoimmune conditions like SLE.