La. Stat. tit. 13 § 4731
When any person is in necessitous circumstances, that person may demand from his or her children or grandchildren alimony for support, and proceedings for that purpose may be instituted in any district court and shall be tried summarily. After hearing the parties, if the court finds the plaintiff to be in need and the defendant or defendants able to contribute to the support of the ancestor claiming it, the court shall award such amount as may be deemed proper, and shall order same payable weekly or monthly, and the judgment shall be at all times subject to the control of the court, by either increasing, decreasing or entirely canceling, as circumstances may require. All proceedings subsequent to the rendition of the judgment may be by rule.
La. R.S. § 13:4731