Mubarak fell Monday inside his cell, causing swelling of his knees, thighs and feet, for which he was being treated, al-Masry al-Youm reported Tuesday.
The tumble was the second one within two weeks, a prison official said.
Officials said Mubarak fell after a visit by his wife, daughter-in-law and the daughter-in-law's father. Mubarak's son, Gamal, was with the ousted president when he fell.
Notable deaths of 2014 [PHOTOS]