"Dr. Goff said, cautioning that he could not comment on Santiago specifically without reviewing his medical records."  ""The delusions, the hallucinations are far more consistent with psychosis than PTSD," said Dr. Donald C. Goff,"

Another article repeated from the NYT that has 1% factual information and 99% opinion or speculation.  Like the quotes above, a Dr who, though experienced in his field, admits he has never seen the patient or his records but is willing to throw out a general diagnosis based on what some reporter told him.  That is like the old elementary school rumor mill.  Even though the spokesperson is the teacher, all information fed to them by the 25 students was false.

Yes there are all kinds of mental illnesses and they all have different symptoms and different causes.  This article has little value as a news article because there is no news and very little fact.  It belongs in a medical publication or opinion column.