That's a normal problem for head trauma victims, but Kuroda's efforts to get some rest were further hindered by a dream in which he got hit in the head for a second time.
Kuroda told reporters Wednesday that he's sleeping better, and he'll have more time to rest after the Dodgers placed him on the 15-day disabled list, retroactive to Aug. 15.
Infielder Tony Abreu was activated and will take Kuroda's spot on the active roster.
While Kuroda said his condition remains day to day, he said he felt better Wednesday than he did Tuesday.
"I feel a lot better," Kuroda said. "I had more overall fatigue yesterday, but I don't have that today."
"In the first two days, I was emotionally excited. So many things going on, so I didn't have time to be tired. So now that I'm recovering, little by little I'm feeling tiredness, the fatigue. But today I feel much better."
Kuroda underwent an ImPACT Test for a second time on Wednesday.
An ImPACT Test is a computerized software program that was designed by the University of Pittsburgh and is used to help monitor how parts of the brain function and react.
Kuroda also said he's watched replays of the line drive that hit him in the head last Saturday.
"The first couple of days I was afraid to watch the video," Kuroda said. "Now after I've looked at it, I'm kind of amazed that I'm alive. I think I'm just lucky."
When asked if he thinks it will be hard to get past such a scary incident, Kuroda said that's a difficult question to answer, but he doesn't think he will be afraid whenever he's back on the mound.
David Ely is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.