Your post interests me because like you, I've never had a blister-type outbreak but exactly as you described--a few pinprick-sized pimples that never burst but simply disappear and light intermittent itching that precede their appearance
I'm considering hyperbaric therapy but I too am skeptical if the person claiming to be cured is unable to produce a negative test result thereafter.
Please keep us posted as to the outcome of your ozone treatment.