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Autoimmunity to insulin in a child with hypoglycemia
Insights
A child developed insulin antibodies causing hypoglycemia without external insulin. These antibodies disappeared over time, resolving the hypoglycemic episodes and symptoms.
Area of Science:
- Immunology
- Pediatrics
- Endocrinology
Background:
- Autoimmune conditions can affect hormone regulation.
- Hypoglycemia in children requires thorough investigation to rule out various causes.
Observation:
- A 5-year-old boy experienced recurrent hypoglycemia without exogenous insulin use.
- Plasma analysis revealed the presence of insulin antibodies.
Findings:
- The child's hypoglycemia resolved as insulin antibody titers decreased.
- Insulin antibodies were undetectable after 17 months of remaining asymptomatic.
Implications:
- This case highlights insulin autoimmunity as a potential cause of unexplained hypoglycemia in children.
- Understanding the transient nature of these antibodies is crucial for diagnosis and management.
Abstract:
Plasma insulin antibodies were present in a 5-year-old boy who had been suffering from frequent hypoglycemic episodes during a year without exogenous insulin administration. The antibodies were of low titre one month after the last hypoglycemic episode, although a possible previous higher titre could have been responsible for the child's symptoms. After 17 months, during which the child remained asymptomatic, insulin antibodies could not be detected in his plasma. This is a new case of insulin autoimmunity associated with hypoglycemia.