How To Cure Severe Itching After Coming Close To Mange Infected Cat?

I am 42 year old woman who has severe itching over my entire body especially external surface of my ears, back abdomen, calf region, hands, near my chin etc..since one month now it has become severe. I am regularly washing with Detol i get instant relief but again it starts to itch. This is because of coming in contact with a cat who has mange. Please advise me of a suitable treatment....Thanks