Hypokalemic metabolic alkalosis >>>
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Loss of weight and amenorrhea >>> think in repeated intentional vomiting or diuretic abuse .
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Hypotension in child (+ hypercalcurea + hypomagnesemia)>>> Batter syndrome
+Hypotension in adult (+ hypomagnesemia with normal urinary calcium )>>>> Gitelman syndrome ( positive family h)
+Hypertension >>Conn>,s disease or Cushing .
Do not forget >>>Bartter present in childhood with excess urinary calcium