Manny Pacquiao and his team really aren't happy about a Filipino doctor -- Dr. Rustico Jimenez -- claiming he's seen warning signs of Parkinson's disease in the fighter, and adviser Michael Koncz says they're considering a civil suit.

From Ronnie Nathanielsz:

Koncz said "what is the name of this alleged well known doctor as we are contemplating a civil suit for merit-less and unfounded accusations." He said "tell me how can one make such allegations based on mere speculation as I am not aware that this alleged doctor ever examined Manny yet he makes such a diagnosis" adding "its amazing what people will do to get media coverage. Anyway I am done responding to this ludicrous diagnosis and we shall quietly enjoy our remaining time in Israel."

Now, I'm not a fancy big city lawyer, so I have no idea what they can really accomplish here, but Pacquiao himself wasn't exactly wild about the claims, going uncharacteristically (and rightly, perhaps) aggressive about it, and then reeling back to just say he's totally healthy and plans to fight again in April and September of this year.

Pacquiao passed medical tests in Nevada and the Philippines after his KO loss to Juan Manuel Marquez on December 8.