Assertion: poison ivy's urushiol | /r/Causes | the rash
Facets:
Source sentences:
text: What is happening when it seems that poison ivy is spreading is that the skin that broke out in a rash sooner likely just had more exposure to the urushiol in poison ivy that triggers the rash.
text: The closest measure to manage a reaction that works involves removal of the urushiol that comes in contact with the skin and triggers the rash.