Wiktionary
vb. (en-third-person singularseize upon)
Usage examples of "seizes upon".
It always happens that when a man seizes upon a neglected and important idea, people inflamed with the same notion crop up all around.
They ask what folly it is that can so seize upon a man, what folly is it that seizes upon so many of their people, making the hungry patient, the suffering content, the dying at peace?
In any case what you call madness is actually a very definite form of diabolic possession which seizes upon these miserable people and causes them to act with the same savagery as the animal they believe themselves for the time to be.
Wherefore, if it shall appear to any man that I have offered in this work any thought that is either too novel or discordant with the truth, I ask him not to denounce me at once as one who boldly seizes upon new ideas, or as a maintainer of falsehood.
Babble he did, thus, with all the fervor that a drunk with a hangover seizes upon the hair of the dog.