People magazine's Web site reported Tuesday that the 46-year-old actress checked into a facility in Arizona.
Locklear's divorce from Bon Jovi guitarist Richie Sambora was finalized in April 2007. They have a daughter, Ava Elizabeth. Locklear is reportedly dating former "Melrose Place" co-star Jack Wagner.
Locklear's TV credits include "T.J. Hooker," "Dynasty" and "Spin City," and her film roles include "The Perfect Man" and "Uptown Girls."