Jerry Sandusky in November 2011 (Creative Commons).

A court order Friday allowed the defense to introduce testimony on whether Sandusky, 68, suffers from a disorder, the news organization reported. 

Sandusky’s lawyers said in a motion that letters written by their client to alleged victims show Sandusky may suffer from histrionic personality disorder. CNN reported that the prosecution had argued that the letters were part of “grooming techniques” commonly used by sexual predators.

According to the U.S. National Library of Medicine, histrionic personality disorder is a condition "in which people act in a very emotional and dramatic way that draws attention to themselves." 

The examination will not delay the trial. The defense is expected to begin presenting their client’s case Monday, CNN reported, after the prosecution rests. 

As part of the approved motion, Judge John Cleland said Sandusky must “make himself available to (prosecutors) for the purpose of preparing rebuttal psychological/psychiatric testimony.”

Sandusky is on trial on child rape charges for allegedly abusing 10 boys over 15 years. 

Read more of Neon Tommy's coverage on Jerry Sandusky here:

Sandusky Defense Prepares To Present Case

Final Prosecution Witness In Sandusky Trial Recounts Alleged Violent Rape

McQueary, Victim 1 Testifiy In Sandusky Trial

Sandusky Called A "Predator" As Trial Begins

Reach Executive Producer Agnus Dei Farrant here.