Try Zanfel, which I used earlier this summer very successfully after having had poison ivy on my arm for several days.  It washes the chemical away.  Costs about $35 over-the-counter and well worth it - works almost right away.  It is not a medicine like Benadryl or hydrocortisone that wears off - it actually removes the source of the problem.  
 
 There is a commercial website I think www.zanfel.com that might give you more information.  
 
 John  |