U.S. doctors online nowAsk doctors free
A 39-year-old member asked:

What's the difference between ocd obsessive?thoughts and schizophrenia? delusional thoughts?

4 doctor answers20 doctors weighed in
Dr. James Saccomando
Psychiatry 21 years experience
Insight: Occasionally, the line can be blurry. However, basically, an obsession is a thought you know doesn't make sense and a delusion is a fixed false belief that you completely believe regardless of evidence against it.
Dr. Susan Uhrich
Psychiatry 37 years experience
Exactly that!: In schizophrenia, there is a break from reality, while psychosis is not a major symptom of ocd.
Dr. Alan Ali
Dr. Alan Alianswered
Psychiatry 33 years experience
OCD: Also, OCD maintain insight, while schizophrenia lack insight.
Dr. Kevin Passer
36 years experience
Insight: People with obsessions realize that their thoughts are unreasonable and unrealistic and have insight into their thoughts. By definition, a delusion is a false belief but a person thinks it is true. Ocd is considered an anxiety d/o whereas delusions are a problem with one's thoughts.
Dr. Robert Rosenfeld
Psychiatry 52 years experience
Sometimes a person with psychosis (delusional thoughts) may be obsessive in their beliefs (eg. that they are being watched) and they dwell on these thoughts relentlessly. The core issue is psychosis but it may present as an obsession.
Aug 13, 2012
Dr. Alan Ali
Dr. Alan Ali commented
Psychiatry 33 years experience
Old term is Obsessive Delusional DO.
Aug 31, 2012
Last updated Mar 20, 2017


Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.