Sometimes I experience itchiness on the back of my scalp and if I even do so little as touch it they turn into little itchy bumps. Itch like crazy. Think they are like stress hives. Saw a dr once about it and general itchiness I would get especially after a shower and he told me it was stress and to take a Claritin. I also use head and shoulders shampoo once in a while and for the most part have it all under control now.
So yeah, totally have experienced stress/anxiety itches..