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What is the approximate time it takes for a person with OCD to experience a reduction in their symptoms during therapy?

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

It is difficult to establish a treatment response timeframe that applies to everyone. Generally, if we use medication to treat someone with OCD, it will be necessary to wait 12 to 16 weeks, once the person has reached the appropriate dose of the medication, to properly assess their response. In some treatment strategies (for example, when we add a reduced-dose antipsychotic to someone who has shown partial improvement with a serotonin-adrenergic drug), we should observe the response after 3–4 weeks.

In the case of drugs, it is especially important to respect two maxims: take the drugs at the correct anti-obsessive dose (higher than the dose used when only seeking their antidepressant effect) and do so for a sufficient time.

In the case of people receiving behavioral therapy, a minimum of 10-12 sessions are usually necessary to observe improvements in less severe cases, and a minimum of 20 sessions is recommended if the symptoms are more severe (usually the sessions are carried out weekly, but there are also some intensive cognitive-behavioral therapy programs, in which the sessions are daily, which allows for a faster improvement of the symptoms).

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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