I suspect that it might be low GABA that is causing the itching, as that is the neurotransmitter that is reduced in alcohol withdrawal (actually, it's a downregulation of GABA receptors), and it's GABA that reduces anxiety. As you say, it's probably just a removal of the normal "anti itch" filter that causes you to notice the itching.
I usually start itching when I read about fleas. There is an actual thing called "contagious itching":
So there can definitely be a psychological trigger for itching. Add in some anxiety and/or withdrawal and it's easy to see how something like Morgellons could happen.
I usually start itching when I read about fleas. There is an actual thing called "contagious itching":
https://en.wikipedia.org/wiki/Itch#Contagious_itch
So there can definitely be a psychological trigger for itching. Add in some anxiety and/or withdrawal and it's easy to see how something like Morgellons could happen.