Exhibit 10.31 CONFIDENTIAL SEPARATION AGREEMENT AND RELEASE THIS SEPARATION AGREEMENT AND RELEASE (this "Agreement"), dated September 30, 2003 (the "Date of this Agreement"), is entered into by and between Questcor Pharmaceuticals, Inc. (the...Confidential Separation Agreement and Release • November 12th, 2003 • Questcor Pharmaceuticals Inc • Pharmaceutical preparations • California
