Another helpful medication is diphenhydramine - Benadryl...
and the generic variations of it sold at drug stores. This is a alergic reaction, after all.
My wife got strong reaction to poison ivy, and took diphenhydramine, on a doctor's recommendation.
Alex
"Men occasionally stumble over the truth, but most of them pick themselves up and hurry off as if nothing had happened." -- Winston Churchill (1874-1965)