Brooke Mueller Sues Rehab Clinic They Sold Me Down the River!

10/3/2011 5:28 PM PDT

Brooke Mueller Sues Rehab Clinic: They Sold Me Down the River

Brooke Mueller
is suing the rehab facility she trusted for treatment, claiming the facility SOLD confidential medical information to the media ... TMZ has learned.

Brooke's beef is with the The Canyon rehab facility in Malibu -- where she secretly sought help in February 2010 --  at the peak of her domestic violence case against Charlie Sheen.

According to the lawsuit, days after she checked in, news broke that Brooke was seeking treatment for substance abuse ... and Brooke claims rehab staff members leaked the info.

TMZ broke the story after the leak ... someone was sending Brooke's patient admissions document to members of the media ... including TMZ, and the form very specifically outlined Brooke's problems.  TMZ never published info from the document.

Brooke claims it was all a crass money grab from staffers at The Canyon -- and now, she's suing for undisclosed damages, claiming her right to privacy has been violated.

A rep for The Canyon had no comment, although as we first reported, after the leak The Canyon officials said they would conduct their own internal investigation.