Abstract

Boumaiz Firdaous, MD*, Zniber Amal, PhD, Benamar Loubna, PhD, Ouzeddoun Naima, PhD

ABSTRACT

Rhupus syndrome is a rare clinical c ondition characterized by the coexistence of rheumatoid arthritis (RA) and systemic lupus erythematosus (SLE), presenting unique diagnostic and therapeutic challenges in the field of rheumatology. This article details the clinical presentation, diagnostic criteria, and management of a newly identified case of Rhupus syndrome with significant renal involvement. We describe the case of a 25 year old North African woman with a complex medical history, who presented with symptoms indicative of both RA and SLE, including inflammatory polyarthralgia, facial erythema, and nephrotic syndrome. Comprehensive laboratory investigations, imaging studies, and a renal biopsy confirmed the diagnosis. The patient was treated with a combination of corticosteroids, cyclophosph amide, hydroxychloroquine, and azathioprine, leading to significant clinical improvement. This case highlights the importance of recognizing Rhupus syndrome as a distinct overlap syndrome and underscores the need for tailored therapeutic approaches to mana ge the complexities associated with simultaneous RA and SLE. Continued research is essential to further elucidate the pathogenesis of Rhupus syndrome and optimize treatment strategies for affected patients.