It has a name, and it's not 'you're a bad mom'
Mom rage is that sudden, disproportionate flash of anger — over spilled milk, one more question, the same shoe on the wrong foot — that leaves you shaking and ashamed after. It's real. Researchers now consider it a common (and under-talked-about) part of postpartum and early-parenting mental health. It's not a character issue. It's a signal.
What's usually underneath it
Rage is almost never the first feeling. Underneath, there's usually some combination of: chronic sleep debt, invisible mental load, unmet needs (food, water, quiet, sex, time alone), grief for the person you used to be, hormone shifts, and the resentment of doing more than your share without it being seen. Rage is what happens when those pile up unspoken.
In the moment: interrupt, don't suppress
Trying to shove the rage down usually makes it bigger. Interrupt it instead. Splash cold water on your face. Step outside for 30 seconds of actual air. Put in one earbud with a song. Any input that shifts your body state gives the wave somewhere to break other than on your kid.
The longer arc: the pot has to stop boiling over
You can't rage-manage your way out of a life that's running you empty. Look at the load: what needs redistributing (a real partner conversation, not a hint), what needs dropping, what needs professional support (a therapist, a GP for hormones, a psychiatrist if it's constant). Rage that keeps coming back is a system asking to be re-designed, not a person who needs to try harder.