A 28-year-old woman with chronic anxiety drinks more than 8 liters of water per day. She has frequent urination. Serum sodium is 129 mEq/L and serum osmolality is low. During water deprivation, urine osmolality rises substantially before any desmopressin is given. Which of the following is the most likely diagnosis?
- A)Primary polydipsiaGABARITO
- B)Adrenal insufficiency
- C)Nephrogenic diabetes insipidus
- D)SIADH
- E)Central diabetes insipidus
Explicação
Primary polydipsia causes excessive water intake with low serum sodium. Because the ADH axis is intact, urine concentrates during water deprivation. Ver explicação completa e trilha adaptativa →