Chapter 2. Grounds For Dissolution Or Legal Separation of California Family Law Code >> Division 6. >> Part 3. >> Chapter 2.

Dissolution of the marriage or legal separation of the parties may be based on either of the following grounds, which shall be pleaded generally:
  (a) Irreconcilable differences, which have caused the irremediable breakdown of the marriage.
  (b) Permanent legal incapacity to make decisions.
Irreconcilable differences are those grounds which are determined by the court to be substantial reasons for not continuing the marriage and which make it appear that the marriage should be dissolved.
A marriage may be dissolved on the grounds of permanent legal incapacity to make decisions only upon proof, including competent medical or psychiatric testimony, that the spouse was at the time the petition was filed, and remains, permanently lacking the legal capacity to make decisions.
No dissolution of marriage granted on the ground of permanent legal incapacity to make decisions relieves a spouse from any obligation imposed by law as a result of the marriage for the support of the spouse who lacks legal capacity to make decisions, and the court may make an order for support, or require a bond therefor, as the circumstances require.