As we've previously reported, Tony's wife, Cristina, called police to their Santa Ana, California home several times over the past couple months when the UFC star was having manic episodes and acting erratically.

Cristina has made it clear she loves Tony and wants him to get treatment -- but during a Feb. 16 incident, things got to a point where she was scared and needed police to intervene.

During the call, Cristina says she needs help -- but warns police that Tony is a professional fighter. She notes, "I don't want no cops to get injured."

The operator responds, "We don't want anyone to get hurt."

Of course, Tony is not just a pro UFC fighter, he's one of the greatest mixed martial artists in the world ... currently, the #1 ranked contender in the UFC's lightweight division.

When cops arrived to Ferguson's home, officers used the information from the call to help diffuse the situation ... and according to the police report, Tony told officers he would seek help.

Unfortunately, cops were called back to the house a few days later -- but the good news, Tony has since agreed to get serious about treatment and appears to be doing better.

In fact, just last week, Tony posted on social media that he's seen a psychologist and that it "went well."