My 3 year old panicks every time I walk out of room... mom mom mom!What to do?

He may need to be away from you some so he can learn that you do always come back. You don’t say if you stay home with him all of the time or what. It’s a trust issue which resolves a little every time you leave him and return to pick him up.

Being not a parent my self, i don’t know if pedagogues agree on this idea, but how about you leave the room for some twenty seconds and reappear (ignoring for a bit (twenty seconds) your child’s crying).
Do it again after a while but lengthen your stay-away’s a little every time.

Sounds like separation anxiety which is normal for children to go through. As time goes by and he sees that you always come back, his response will decrease and eventually he won’t scream or cry anymore. Separation anxiety is normally seen at a younger age, but it depends on how things have been for your son up to this point. If you stay at home with him and have always been with him, then he is developing it later due to your particular situation.

At a time when he isn’t panicky sit down and talk to him about what leaving means. Show him examples of things he leaves every day but that he never forgets about. Like his favorite toys, pets, etc. Then explain to him that you would never forget him and will always be back.

Also if you have begun “slipping” out unnoticed to avoid the scene, stop it. Yes, you may make the occasional stress free (for you) escape but you are training the child to not trust you and to always keep his eyes on you.

Instead, in a calm and in control voice say “Johnny, Mommy is going now and I’ll be back at ____insert some recognizable time for him like “after nap, after snack time, story time, etc. Then hug him and walk out…and keep walking no matter what.