www.som360.org/es
All answers

Is there a trigger for OCD? Can it be prevented?

María del Pino Alonso Ortega
María del Pino Alonso Ortega
Psychiatrist. Obsessive-Compulsive Disorders Unit. Psychiatry Department
Hospital Universitari de Bellvitge

Studies show that in approximately 35% of people with OCD, the onset of symptoms is related to certain triggers. These triggers can be physical (such as certain infections, hormonal factors, or substance use) or life events that involve changes (both positive and negative for the individual).

Regarding physical factors , the clearest examples are what are known as PANDAS (Post-Streptococcal Neuropsychiatric Disorders), cases in which there is a sudden and rapid onset or worsening of obsessive symptoms or tics, usually in children who have suffered a respiratory infection caused by a bacterium of the streptococcus family. In these cases, the body generates antibodies to defend itself against the bacteria, which attack certain areas of the brain (the basal ganglia), causing the onset or worsening of obsessive symptoms.

We also know that hormonal changes can affect the onset and course of OCD. It is common for girls with obsessive symptoms to experience the onset of the disorder around the year of menarche, their first period. It is also relatively common for some women to begin experiencing obsessive symptoms during pregnancy or especially postpartum, or to experience a worsening of symptoms during different phases of the menstrual cycle (ovulation, menstruation). In these cases, if symptoms worsen significantly during menstruation, regulating the cycles with oral contraceptives can be attempted, and it will also be especially important to monitor the progression of OCD if the woman becomes pregnant.

Finally, some people describe the onset of obsessive-compulsive disorder after using certain drugs such as cannabis or cocaine . In these cases, it is essential to recommend complete abstinence from drugs.

Regarding changes in the environment , we know that OCD can sometimes appear after traumatic events and also in situations that represent a significant change for the individual, especially if they involve an increased sense of responsibility (starting new studies, a new job, moving out of the family home, beginning a romantic relationship, etc.). Those who associate the onset of their OCD with environmental stressors tend to be somewhat older and have less of a family history of OCD than those with a more "spontaneous" onset.

You are watching
Marta Carulla-Roig
Marta Carulla-Roig
Child and adolescent psychiatrist. Mental Health Area
Hospital Sant Joan de Déu Barcelona
María del Pino Alonso Ortega
María del Pino Alonso Ortega
Psychiatrist. Obsessive-Compulsive Disorders Unit. Psychiatry Department
Hospital Universitari de Bellvitge