Long COVID-19 and Insulin Autoimmune Syndrome: A Case Report

Purpose To describe a case report of a patient with symptoms associated with metabolic alterations 1 month after having COVID-19. Methods Laboratory tests, clinical evaluations, and body composition assessments were performed by specialists. Findings The patient presented excessive sweating, hot flashes, dizziness, blurred vision, and seizure. Laboratory tests indicated low glucose levels after convulsions (50, 42.7, and 55 mg/dL), high insulin levels (basal, 638 µIU/mL; 2-hour, >1000 µU/mL), and positivity for anti-insulin antibodies. The patient was diagnosed with insulin autoimmune syndrome. Treatment with azathioprine and nutritional recommendations improved remission. Implications SARS-CoV-2 infection or vaccination might induce insulin tolerance failure.