Contact dermatitis, poison oak, how to make it go away quickly?

Poison oak rash: It is one of the most common forms of contact dermatitis. Treatment of itching includes sarna anti itch lotion, cool compresses and oral antihistamines. For cool compresses one can put a cap full of listerine in the water. Menthol and alcohol in listerine have a cooling effect and help itching. Ultimately oral and topical corticosteroides are most effective.

Steoids: If otc topical preparations aren't doing the trick for you, and/or the rash is widespread, oral steroids are the way to go.