I have been researching this on again off again condition since last October, 2018 for a solution. My dermatologist suggested Zostrix an OTC capcaisin cream and a chiropractor. My primary care physician suggested topical ICE. I am currently maintaining the situation with Biofreeze spray and roll on. PIT injections are also known to help according to this Forum. The itching does increase anxiety and stress. External warm water, sun, heat makes it worse. Ice makes it better and having an ice pack on your forearms for about 15 minutes helps as well. It's a strange condition and I am unable to figure out why no one treatment seems to be able to help any one individual.