Cerebrospinal Fluid (CSF) leaks occur when there is an open communication between the intra-dural compartment and an extradural location. Diagnosis and management of a CSF leak depends on the location, etiology, and presenting symptoms. Etiologies may include trauma, iatrogenic injury, tumors, and infections. Spontaneous and idiopathic presentations are frequently encountered and can be associated with comorbidities such as obesity and idiopathic intracranial hypertension (IIH). Regardless of etiology, CSF leaks can present with a range of clinical presentations and can be difficult to diagnose and manage. CSF leaks that are not successfully recognized and treated may lead to life threatening complications such as meningitis. Practitioners face several challenges identifying and working up CSF leaks: -Heterogeneous clinical presentations that overlaps with common otolaryngic disorders -Intermittent symptoms -Selecting and implementing proper diagnostic tests-Localization of small dural openings-Management of comorbid conditions such as IIH. This expert panel includes anterior and lateral skull base surgeons and a neurologist specializing in IIH. The panel will guide practitioners through these challenges, using cases to provide a framework for the work-up and management of CSF leaks. The panel will also review definitive treatments from bedrest to surgical reconstruction and discuss when to involve other specialists. Goals: The panel will help general ENTs identify and work-up anterior and lateral skull base CSF leaks. We will review the natural history of multiple CSF leak etiologies and key pathophysiology pertaining to clinical work up and diagnosis. We will use a case-based format to help construct a practical framework for detecting, diagnosing, and treating CSF leaks.