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Hypomagnesemic seizures: case report and presumed pathophysiology.
Pedro Weisleder1, Joshua A Tobin, John F Kerrigan
1Division of Child Neurology, Children's Health Center and Barrow Neurological Institute, St Joseph's Hospital and Medical Center, Phoenix, Arizona 85013, USA.
Hypomagnesemia, a rare cause of seizures, can result from poor absorption or kidney issues. This case highlights a 5-week-old infant experiencing seizures due to renal magnesium wasting.
Area of Science:
- Pediatric Neurology
- Clinical Electrophysiology
- Renal Medicine
Background:
- Hypomagnesemia is an infrequent but recognized cause of seizures.
- Electrolyte imbalances, specifically low magnesium levels, can precipitate neurological events.
- Causes include impaired gastrointestinal absorption or excessive renal excretion of magnesium.
Observation:
- A 5-week-old infant presented with seizures.
- The seizures were identified as hypomagnesemic seizures.
- The underlying cause was determined to be renal magnesium wasting.
Findings:
- The patient's seizures were directly linked to hypomagnesemia.
- Renal magnesium wasting was the specific etiology identified in this infant.
- The pathophysiology may involve the N-methyl-D-aspartate-type glutamate receptor-sodium channel complex.
Implications:
- This case underscores the importance of considering hypomagnesemia in infantile seizures.
- Understanding the pathophysiology may lead to targeted treatments for hypomagnesemic seizures.
- Early diagnosis and management of renal magnesium wasting are crucial for preventing neurological complications.
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