*Finally, someone has come forward with a diagnosis for Usher’s apparently mental ex-wife.

Not to be too harsh, but even before she lost her son, Tamkea Foster seemed like she had a few screws loose.

Well now someone with a degree and a license to diagnose crazy told the courts that she’s got some psychological issues.

During the second day of the former couple’s custody battle, Foster shared with the court her upbringing, saying she was poor and was forced to steal and write bad checks to survive. But she was sure to emphasize that that’s all in the past and she’s not proud of her actions. Now she’s a new woman.

She quickly followed up with her critique of Usher’s intentions, saying he only filed for sole custody to stir up problems.

“I begged him on numerous occasions to withdraw this petition. I was like, ‘it’s ridiculous, are you mad at me? I don’t know why. You know your kids are fine. They’re happy… Maybe I don’t do everything perfectly, but I do the best I can.”

Before Usher’s reputation could be totally obliterated by his ex, the singer’s lawyer reminded the court that Foster is crazy, describing the physical altercation she had with Usher over his current girlfriend.

His attorneys closed out their arguments with a testimony from a psychologist who believes she has a “moderately severe mental disorder.”

Yikes.

While the battle wages on, Foster is asking for an increase in child support from $8,000 to $11,000.