Planned vs. Incidental Exposure: Why You Need Both in ERP
In my practice, one of the most consistent inflection points in Exposure and Response Prevention (ERP) work comes down to something deceptively simple: a person’s willingness to engage with discomfort both when they plan to and when they don’t expect to. Over time, I’ve found it useful to talk about exposure in two broad categories—planned exposure and incidental exposure—because each targets a slightly different mechanism in obsessive-compulsive disorder, and both are necessary for meaningful, durable change.
Planned exposure is what most people think of when they hear about ERP. It’s intentional, structured, and it often involves setting aside time, minimizing distractions, and deliberately bringing oneself into contact with feared thoughts, images, or situations. In my practice, this might look like a patient writing out feared scenarios, repeating triggering phrases, or intentionally imagining outcomes that feel deeply egodystonic (thoughts that are inconsistent with one’s identity). The key here is willingness—not just to tolerate distress, but to invite it in. This is the part that many patients understandably resist, especially on days when symptoms feel quieter. I often hear this as “Why would I poke the bear when things are going well?” or “I just want to have a good day for once and not have to think about my intrusive thoughts.”
Although it is tremendously difficult to do, this is where therapeutic leverage lies. Planned exposure directly targets what we understand as fear extinction learning—the process by which the brain updates its prediction that a feared stimulus is dangerous. From a neuroscience perspective, this involves modulation of the amygdala’s threat response through top-down regulation from the ventromedial prefrontal cortex (vmPFC), which helps encode new “safe” associations over time. When a patient voluntarily activates the fear network and then refrains from engaging in compulsions, they are, in effect, teaching the brain: this signal is a false alarm. Repetition of this process is what gradually reduces the intensity and frequency of intrusive thoughts.
I often tell patients that we are not doing exposure until anxiety goes away—we’re doing it until the experience becomes boring. That shift toward boredom is clinically meaningful. It reflects a decrease in salience, suggesting that the brain is no longer tagging the stimulus as threatening. This aligns with inhibitory learning models of exposure, which emphasize that new, non-threatening associations compete with and override older fear-based learning. In exposure work, we see this change through rating of the patient’s distress score or SUDS (Subjective Units of Distress Scale) which over time peaks at lower and lower scores.
Incidental exposure, on the other hand, happens in the wild. It’s unplanned, often inconvenient, and frequently unwelcome. A stray thought, a passing image, a fleeting urge—something in the environment activates the obsessive-compulsive loop. In those moments, the work is not to create exposure, but to respond differently by “avoiding avoidance”. This is where response prevention becomes an act of increasing one’s awareness and reflex towards their unwanted thoughts and urges.
In my practice, I frame incidental exposure as the proving ground for behavioral change. While planned exposure builds the capacity to tolerate distress and weakens the perceived threat of intrusive thoughts, incidental exposure is where patients learn to interrupt compulsions in real time. Planned exposure helps you get ready for the moment—incidental exposure is the moment in action. From a learning perspective, compulsions are negatively reinforced behaviors—they reduce distress in the short term, which strengthens the likelihood of repeating them in the future. Incidental exposure creates opportunities to disrupt this reinforcement cycle. Each time a patient experiences a trigger and chooses not to engage in a compulsion, they are weakening the learned association between distress and relief. Over time, this reduces the automaticity of compulsive responding. I must stress however, how difficult and simultaneously rewarding this is when this redirection happens from compulsive loop to response prevention.
One of the more subtle challenges I encounter is that patients often engage in one type of exposure while neglecting the other. Some become very good at structured, planned exercises but struggle to apply those skills in the moment. Others rely solely on incidental exposures—waiting for life to bring the discomfort—without ever building the tolerance and confidence that comes from deliberate practice. In both cases, progress tends to plateau (once again seen through stagnating SUDS scores).
What I’ve come to emphasize is that planned and incidental exposures must co-occur consistently. They are not interchangeable; they are complementary. Planned exposure strengthens the system—expanding a person’s window of tolerance and reducing the perceived threat of intrusive content. Incidental exposure applies that strength in context—disrupting compulsions and reshaping behavioral patterns where they occur.
This is also where willingness becomes the central variable. Especially on the “good days,” when symptoms feel quieter and the urge to avoid discomfort is at its strongest. Those are often the most important days to engage in planned exposure. Avoiding exposure in those moments may provide short-term relief, but it subtly reinforces the idea that the thoughts are still dangerous—that they must be kept at bay. In contrast, choosing to engage with them voluntarily sends a different message: I can handle this, even when I don’t have to.
Over time, this dual approach—inviting discomfort when it’s planned and responding skillfully when it’s incidental—creates a kind of psychological flexibility that is essential for recovery. The goal is not to eliminate intrusive thoughts entirely, but to change one’s relationship to them (hopefully quiet them in the process). When both forms of exposure are practiced consistently, patients often report a pivot from feeling controlled by their thoughts to feeling largely indifferent to them.
Stephen Haramis, LCSW-R, BCD, C-PD
