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Isolated autosomal dominant hypomagnesemia, Glaudemans type (IADHG) is a form of familial primary hypomagnesemia (FPH), characterized by low serum magnesium (Mg) values but normal urinary Mg values. The typical clinical features are recurrent muscle cramps, episodes of tetany, tremor, and muscle weakness, especially in distal limbs. The disease is potentially fatal.
Estimated prevalence: <1 in 1,000,000 (VERY_RARE).
Data assembled from 2 of 12 sources · Last updated Sep 19, 2026, 6:57 PM UTC
European rare disease database
Genetic and Rare Diseases Info Center