the mind > emotion > suffering > state of being upset or perturbed > worry > [noun] > causing worry > one causing (3)
One who fidgets or worries unnecessarily, or who causes the fidgets in others.
A state of worry or mental distress; a fretting care or anxiety. Also, a person that worries others or himself.
One who causes distress of mind to another; also, one who gives way to anxiety or mental disquietude.