yep, there are many, many plants that are poisonous and should be dealt with cautiously... unfortunately most people never realize how many until they have something like this happen..

Besides cycling I am an avid gardener. I always wear gloves, long pants, and sturdy shoes when pruning anything... and of course, besides the saps there are also spiders to worry about...

sorry he got sick and is having a bad reaction the med to help him recover too... hope he's better soon... and thanks for the heads up on this!