Thanks for your reply Gio. May consult an Immunologist if things continue....hopefully that'll be sufficient - wizards are very hard to find :))
I don't think they could be symptoms of a specific condition, they're too generic.
one way to link all symptoms could be a Immunological problem, your immune system being adjusting in the past 3 years.
hair follicles commonly react to immune responses by "shutting down" temporarily.
maybe you could consult a Immunologist although your symptoms are mild and if, hopefully, all tests were negative, you would need a Nobel Prize or a wizard to know what it is.