From my experience with antidepressants, this is pretty normal behavior for younger kids taking them--My layperson's guess is that the Celexa is causing the escalating behavior. Both my daughter and son have taken antidepressants with similiar results. My daughter was a teenager and flat out refused her Celexa after about a month saying it made her "jittery" and she's NOT a nervous kid. Prozac made her flip out and it's related to Celexa. Prozac also made my son flip out. I've taken almost all the SSRIs and they are hit or miss, period. They are as apt to cause worse agitation as they are to help. My advice from my own experience is that the more the medications build up in the system, the more agitated a person will get by adding fuel to the fire. If it were my child, I'd start withdrawing (and do it slowly. SSRI withdrawal is often worse than the side effects). If you're going on vacation, the last thing you need is an escalating child. in my opinion I'd slowly withdraw from the Celexa before I'd let a doctor add a medication (yes, YOU have the choice). I'd want to see if the Celexa was causing the child to act out that way before throwing in another heavy medication. I've learned from experience that the psychiatrists make suggestions, but I have the right to make the final decisions. I didn't always make good ones, but neither did the doctors. I've learned to trust my gut. I don't know if this was helpful or not, but I'm just passing along both my layman's opinion and my real life experiences. The medications Game is very tricky and a lot of times I get the feeling the doctors are picking a medication out of a hat and saying, "Ummmmmmm, we'll try THIS." It doesn't make me feel very comfortable. I've had to do my own research on medications so that I could have halfway coherant discussions about them with psychiatrists both for my kids and myself. For me, a combination of Paxil/Klonopin has worked for years and I don't know why. Paxil causes a lot of people to "lose it" but it calms me down. I wouldn't give Paxil to either of my kids. Klonopin was added because I had such bad panic attacks that I couldn't leave the house. It really helps, but it sedates me (even after all these years) so I only take it at night (1 mg.) Also, it is habit forming, and a cousin to Valium and that would be my last choice for a child. It's another tough withdrawal unless you are certain your child will need it for life. Adults who have withdrawn from both SSRIs and benzos have told me it ain't pretty. I never plan on quitting my medications--they made my life normal. Anyways, enough rambling. Good luck.