the urge for violence

i am genuinley so close to actually hurting my brother,he just does not shut up,i sort of yelled at him today,as in like two minutes ago cuz there was sugar in the chips my sister got me and i pointed that out(not her fault she was trying to be nice getting me something savoury) and my brother was asking a bunch of dumb questions about things (inanimate objects that are in daily use and such)having sugar in them as a "joke" and to be "funny" cuz someone trying to be healthy cuz it was doctors orders is funny i guess,anyway i told him to shut up before i actually punch and went on a small rant about him always saying stupid shit,cuz he does,example,i went down to do my laundry earlier today and he just told me to go away as if he owns the kitchen? i'd also like to point out he's caused physical harm to both people and objects.

i always get so shaky when i get this urge to hurt him(and anyone really but usually its aimed at him) and i feel this pit in my stomach and i feel like im going to throw up,i hate it.