What question did this study set out to answer?

To report a rare case where macrophage activation syndrome was the initial presentation of systemic lupus erythematosus.

February 12, 2026Annals of the National Academy of Medical Sciences (India)0 citationsOpen Access

New-onset systemic lupus erythematosus presenting with macrophage activation syndrome: A case report of rare and life-threatening complication

SAShaik Mohammed AslamM.S. Ramaiah Medical College AKAshwin KulkarniM.S. Ramaiah Medical College MKMohammed Suhail KM.S. Ramaiah Medical College

Key Points

To report a rare case where macrophage activation syndrome was the initial presentation of systemic lupus erythematosus.
Describes a case of a postpartum woman with new-onset systemic lupus erythematosus presenting with macrophage activation syndrome.
Assessment of symptoms including cytopenia, hepatic dysfunction, dyselectrolytemia, and neurological derangement.
Classification criteria for macrophage activation syndrome and systemic lupus erythematosus were employed for diagnosis.
The patient exhibited significant cytopenia, hepatic dysfunction, and neurological symptoms.
Diagnosis of macrophage activation syndrome alongside systemic lupus erythematosus was confirmed.
Treatment with high-dose intravenous methylprednisolone and intravenous immunoglobulins led to significant recovery and discharge.

Abstract

A variant of hemophagocytic lymphohistiocytosis (HLH), macrophage activation syndrome (MAS) is seen in autoimmune diseases such as systemic lupus erythematosus (SLE), Systemic onset juvenile idiopathic arthritis. It is known to present as a complication in the course of these autoimmune conditions. However, the occurrence of MAS as the first presentation of SLE, can pose a challenge in its timely diagnosis and management in account of the similarity in their clinical presentation. Herein we report a case of a young postpartum lady with new- onset SLE that surfaced with MAS. The patient presented with cytopenia, hepatic dysfunction, dyselectrolytemia and neurological derangement, which was complicated with polyserositis, myocarditis, and evolving nephritis. Further investigations prompted towards a hyperinflammatory, autoimmune state. These findings, alongside her systemic symptoms, satisfied the classification criteria for MAS and SLE, solidifying the diagnosis of MAS in conjunction with SLE. She was effectively managed with high dose intravenous Methylprednisolone, oral Prednisolone and Intra-venous immunoglobulins (IVIG), following which patient showed significant improvement, with resolution of hematologic abnormalities and neurological recovery and was discharged with an elaborate follow-up plan.

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