Psychogenic shock (aka Syncope, Fainting) is usually related to a sympathetic response causing a temporary decrease in cerebral perfusion. Usually, very temporary, and when the body performs it basically goes into a preservation mode, shunting blood supply (i.e. reason for being pale) and adjust accordingly.
Types of call, usually when someone is seeing something grotesque, shocking, bad news, or EMT students watching a procedure. Simply treated, lay down.... no big deal.
R/r 911