[Vigilantcitizen]

I’ve had tons of poison ivy and never had it blister.

[melissa_in_ga]

My hubby is extremely allergic to poison ivy. It will blister on his skin.

This is not poison ivy, but the two on the arm do look like bug bites.

[raybbr]

I’ve had tons of poison ivy and never had it blister.

I have. It depends on the body's reaction.