Autosomal dominant primary hypomagnesemia with hypocalciuria (Orphanet rare-disease nomenclature identifier Orphanet_34528) (ADPHH) is a mild form of familial primary hypomagnesemia (FPH, see this term), characterized by extreme weakness, tetany and convulsions. Secondary disturbances in calcium excretion are observed. Also known as: HOMG2, Isolated autosomal dominant hypomagnesemia, Isolated renal magnesium wasting, Renal hypomagnesemia type 2.