My wife had terrible itching for years , we tried everything , finally I found Neem Oil soap, it was a miracle from God , she was 50% better in one day and now only has a problem if she uses too many soap products in a day.
It is about 4 or 5 dollars a bar but if you are suffering like she did it's worth 10x that.
She had tried Tea Tree oil and coconut oil before and they did not help , Neem Oil Soap.