Corugender, alternatively known as flashgender, is a gender identity that is affected by trauma/mental health related flashbaks. It changes during and around flashbacks. For example, one may be male when not experiencing a flashback but non-binary when experiencing one.
This is a neurogender and is exclusive to people with PTSD or any other mental illness which causes flashbacks.
History
Corugender was coined some time in 2015 by now deactivated tumblr user gmaora and posted via mogai-archive on tumblr. The flag was designed by Pride-Flags on DeviantArt on September 9, 2015.
Etymology
Corugender comes from the Latin word for flash, "coruscans".