I can truly say I've tried everything going for my itchy scalp.
I've had it for years and I can't get rid of it- I feel so down that I might actually have decent hair but it's ruined by the fact that I scratch my scrap incessantly 
I'm not sure there is anything else I can try- have been using apple cider vinegar but hasn't worked.
As soon as I wash my hair the cycle of itching starts again.
What could it be?