• Specialty
  • Cardiology
  • Dentistry
  • Dermatology
  • General Medicine
  • GI/GU
  • Hematology
  • Immunology
  • Lab Medicine & Pathology
  • Neuro-Psych
  • OB-Gyn
  • Oncology
  • Ophthalmology
  • Orthopaedic
  • Otolaryngology - ENT
  • Radiology
  • Surgery

• Neuro-Psych
  • Lots of Neuro-Psych Terms
  • Alzheimer�s Disease Terms
  • Brain Injury Terms
  • Consciousness Levels
  • Cranial Nerves (I-XII)
  • Depression Related Terms
  • Glasgow Coma Scale
  • Mental Health Related Terms
  • Neuro/Psych Medications
  • Phobias
  • Psychiatric Interviews & Examinations
  • Sleep Related Abbreviations
  • Sleep Related Terms
  • Suicide Related Terms
  • Tumors - Neuro
  • Sample Reports - Neurosurgery
  • Sample Reports - Sleep Medicine
  • Sample Reports - Psychiatry / Psychology
  • Sample Reports - Neurology

• Depression Related Terms

- O -

• Obsessions

Persistent and recurrent thoughts, impulses, or images, that are experienced as intrusive and disturbing but are difficult to suppress or control.



• Obsessive

Used to describe persistent and recurrent unwanted thoughts, images, or impulses.



• Obsessive Compulsive (OC) Spectrum Disorders

A diverse group of problems/conditions that have been considered to perhaps be related to OCD including compulsive gambling, trichotillomania, body dysmorphic disorder (BDD), hypochondriasis, somatization disorder, Tourette Syndrome (TS), Autism, Asberg�s Syndrome, kleptomania, eating disorders including anorexia nervosa and bulimia nervosa, and various disorders of impulse control.



• Obsessive Compulsive Disorder (OCD)

An anxiety disorder characterized by obsessive and compulsive symptoms.



• Obsessive Compulsive Personality

A personality style characterized by concern with maintaining order, control and following the rules.



• Obsessive Disorder

A disorder characterized by persistent and recurrent unwanted thoughts, images, or impulses but few or no compulsions.



• OCD

Obsessive compulsive disorder.



• Operant Conditioning

A form of learning by which a response is rewarded to increase the likelihood that is will happen again.



• OTC

Over-the-counter (non-prescription) medication.



• Outcome Research

Used to describe studies of the effectiveness of treatments.



• Overt Behavior

Behavior that can be observed by another person and can therefore be measured.



• Oxytocin

A hormone with a number of functions including muscle contraction and nerve sensitivity.