Final answer:
Diabetes insipidus is the condition that develops when the posterior pituitary no longer releases adequate amounts of ADH. It is characterized by increased urine production and chronic dehydration.
Step-by-step explanation:
When the posterior pituitary no longer releases adequate amounts of antidiuretic hormone (ADH), the condition that develops is called diabetes insipidus. This condition is characterized by the inability of the kidneys to retain water, leading to increased urine production and chronic dehydration. Severe cases can cause electrolyte imbalances due to dehydration.