Keyshia Cole Sued ... Woman Seeks $4 Million In Damages

Keyshia Cole put a serious hurting on the woman she accused of banging Birdman ... at least according to the woman who's now demanding $4 million to cover a slew of alleged injuries.

You'll recall, Keyshia was dating Birdman in 2014 when, according to a police report, she found Sabrina Mercadel at his L.A. penthouse, flew into a jealous rage, and allegedly beat the hell out of her. Sabrina's now laying out the full extent of her damages (financial and physical):

- $1.5 mil, pain and suffering
- $500k, emotional distress
- $2 mil, loss of use of body part
- $200k, future medical expenses
- $50k, loss of earnings
- $300k, future loss of earnings

Sabrina was also suing Birdman's building, however she's since dropped the pad from the lawsuit. She also insists her relationship with Birdman was "plutonic."