Neurology
The Valsalva maneuver is used to aid in the clinical diagnosis of problems or injury in the nerves of the cervical spine. Upon performing the Valsalva maneuver, intraspinal pressure slightly increases. Thus, neuropathies or radicular pain may be felt or exacerbated, and this may indicate impingement on a nerve by an intervertebral disc or other part of the anatomy. Headache and pain upon performing the Valsalva maneuver is also one of the main symptoms in Arnold-Chiari Malformation
Read more about this topic: Valsalva Maneuver