Multisystem Inflammatory Syndrome in an Adult With COVID-19

Area of Science:

• * Infectious Diseases
• * Pediatrics
• * Rheumatology

Background:

• * Multisystem inflammatory syndrome (MIS) is a severe condition linked to SARS-CoV-2 infection, primarily documented in children.
• * MIS is defined by fever, inflammation markers, and multi-organ dysfunction in patients under 21.

Observation:

• * A case report details a 39-year-old male with prior COVID-19 infection.
• * The patient presented with symptoms aligning with MIS criteria, including inflammation and organ dysfunction, despite exceeding the typical age range.

Findings:

• * The adult patient met the non-age-related criteria for MIS in children and working definitions for MIS in adults.
• * Treatment with aspirin, corticosteroids, and intravenous immunoglobulin led to clinical improvement.

Implications:

• * Clinicians must consider MIS in adults with a history of or concurrent SARS-CoV-2 infection.
• * This expands the understanding of MIS beyond pediatric populations, suggesting a broader spectrum of post-COVID-19 inflammatory sequelae.