Did the Dementors affect the Death Eaters in Azkaban?
Samantha: Was Snape the only Death Eater who could produce a full Patronus?
J.K. Rowling: Yes, because a Patronus is used against things that the Death Eaters generally generate, or fight alongside. They would not need Patronuses.
J.K. ROWLING - WEBCHAT 07.30.07 - THE LEAKY CAULDRON
It seems as if the Death Eaters who went to Azkaban for extended periods of time came out as fairly functional. For example, many of the DEs who were at the Battle of the Department of Mysteries in Order of the Phoenix had been recently broken out from Azkaban and they were lucid and able to follow Lucius Malfoy's directions. I'm not suggesting that Bellatrix Lestrange is the epitome of psychological stability, but she was fervent in her service to the Dark Lord and her belief in his eventual return before going to Azkaban; it seemed to empower her. Barty Crouch Jr, on the other hand, was terrified of Azkaban and begged his mother and father to not send him to the prison. He was like a little boy.
The boy [Barty Crouch Jr] began to scream.
‘No! Mother, no! I didn’t do it, I didn’t do it, I didn’t know! Don’t send me there, don’t let him!’
The Dementors were gliding back into the room. [Barty Crouch Jr's] three companions rose quietly from their seats; the woman with the heavy-lidded eyes [Bellatrix Lestrange] looked up at [Barty Crouch Sr] and called, ‘The Dark Lord will rise again, Crouch! Throw us into Azkaban, we will wait! He will rise again and will come for us, he will reward us beyond any of his other supporters! We alone were faithful! We alone tried to find him!’
Goblet of Fire - page 517 - Bloomsbury - chapter 30, The Pensieve
Did the Dementors have any affect -- positive or negative -- on the Death Eaters in Azkaban? If Death Eaters naturally affiliate with Dementors, would that mean Death Eaters in Azkaban would have an easier time coping there than a regular prisoner?