A postpartum nurse is evaluating a client who delivered by c…
A postpartum nurse is evaluating a client who delivered by cesarean birth with epidural anesthesia 48 hours ago. The client reports a persistent frontal headache that worsens when sitting or standing and improves when lying flat. Her vitals are stable, neurologic exam is non-focal, and she denies photophobia or neck stiffness. Which of the following is the most likely etiology of her symptoms?