Final answer:
Hypotension is a clinical manifestation of vasopressin deficiency, accompanied by symptoms such as weakness and fatigue.
Step-by-step explanation:
A clinical manifestation that occurs in a client with vasopressin deficiency is hypotension. Vasopressin, also known as antidiuretic hormone (ADH), plays a role in maintaining blood pressure by causing vasoconstriction and increasing overall fluid levels. When there is a deficiency of vasopressin, blood pressure can drop, resulting in hypotension. Other symptoms of vasopressin deficiency may include weakness, fatigue, and circulatory system collapse.