Akathisia is an extreme type of restlessness that can feel physical or emotional or both. It is often confused with anxiety. Many patients have posted videos online to help others understand what it feels like.
This video is of a doctor describing his own experience with akathisia at a Neuroscience Education Institute (NEI) conference.
Doctor describing his episode of akathisia
This akathisia rating scale can be downloaded at: http://simpleandpractical.com/wp-content/uploads/2014/09/Barnes-Akathisia-Rating-Scale-BARS.pdfBARS Barnes Akathisia Rating Scale