AceShowbiz - Busy Philipps didn't know she was suffering from ADHD until she took her now 15-year-old daughter, Birdie, to an ADHD evaluation. The "Girls5eva" star detailed how she received her diagnosis in an interview with Us Weekly.

"My older daughter was having some issues in school and we took her to be evaluated," the 44-year-old told the outlet. "And literally in the evaluation, my ex-husband, Marc [Silverstein], we were looking at each other because everything the doctor was asking Birdie and talking about, I was like, 'But that's me. That's what I have.' "

Philipps admitted that she'd felt like "there was something wrong" with her upon learning of her diagnosis. "And then to find out that, oh, no, no, wait, I have ADHD. There are ways to deal with it, there are medications. It has changed my life," she shared.

Of the symptoms she faced before going on medication, Philipps detailed, "I had a really difficult time completing tasks. I had a lot of big ideas and not a lot of follow through." She added, "I often found myself behind on calls or double booked for things, canceling on people. It makes you feel bad because you feel like you're messing up."

"I would forget or I would mix up times for play dates. I would mess up the kids' schedule and my schedule," the podcaster continued. "And the fact is, as women, as moms, as parents, .... we must keep a million things straight."

Philipps, who shares Birdie and daughter Cricket, 10, with Silverstein, 52, admitted that her struggles "affected my self-esteem" because she felt "like I wasn't as on top of it as the other people that were around me." Luckily, things changed after she received her diagnosis.

"It's no coincidence really that these last several years of my career have been the best and most productive," she elaborated. "And I've been doing so many more things that I've wanted to do for so long, but sort of was lacking the resources and the ability and even just the awareness."