Single word for the act of being susceptible?

I want a single word verb to express the action of actively having been the victim of susceptibilities.

For example, as a standard use of the word susceptible:

Bob was a recovering alcoholic, and was susceptible to relapsing.

I want to word that describes that he actually did fall victim to the thing he was susceptible to.

Last night Bob [supceeded] to his alcoholism and went on a bender.


Solution 1:

He succumbed to his alcoholism and went on a bender.

Succumb:

to yield to superior strength or force or overpowering appeal or desire. "succumb to temptation"