Understanding How SUD Is Used in EMDR Therapy Sessions

Imagine sitting quietly in a therapist’s office, gently tracking an unsettling memory while your eyes move from side to side. The memory feels heavy, charged with emotion, but as the session progresses, you find the intensity lessens. This delicate process is what many experience during EMDR therapy, or Eye Movement Desensitization and Reprocessing. Central to this therapeutic method is a simple yet profound tool: the Subjective Units of Disturbance—or SUD. Understanding how SUD operates within EMDR sessions reveals not only the nuanced way our minds process trauma but also reflects larger themes of emotional measurement, trust in personal experience, and evolving ways that healing has unfolded through history.

At its core, SUD is a way for clients and therapists to measure the level of distress or discomfort a particular thought, memory, or feeling is causing. This is often rated on a scale of 0 to 10, where 0 represents complete calm or neutrality, and 10 embodies overwhelming distress. While this might seem straightforward, the meaning behind a number for “disturbance” is anything but simple. Psychological experience is deeply subjective, tied to personal history, culture, and even daily mood fluctuations. This invites an intriguing tension: how can such an intangible, complex feeling be distilled into a neat number? Yet, this very tension underscores the balance EMDR therapists strive for—using a structured framework without reducing the richness of human feeling.

Consider a client recalling a traumatic event like a car accident. Early in the session, a particular memory might rate an 8 or 9 on the SUD scale. As EMDR’s bilateral stimulation prompts the brain to reprocess the memory, those numbers often decline. This tangible gauge of distress allows both client and therapist to recognize progress, adjust techniques, or pause if the experience becomes overwhelming. It enshrines the client’s subjective experience as the guiding compass, a cultural nod to valuing individual emotional truth rather than pathologizing or invalidating pain.

Through time, the concept of self-reporting emotional discomfort has seen an evolution that mirrors broader shifts in psychology and medicine. In the early 20th century, mental health practitioners often relied heavily on observation, diagnosis, and rigid criteria while dismissing patients’ own reports as unreliable or exaggerated. The rise of client-centered therapies in the mid-1900s marked a significant cultural turn toward trusting individual narratives. EMDR, developed in the late 1980s, owes some of its conceptual grounding to this shift, integrating measurable subjective experiences like SUD into a clearly defined therapeutic method.

This strategy isn’t unique to EMDR. Pain scales used in hospitals, mood charts in psychiatric care, and stress questionnaires for burnout all echo a fundamental human need—to understand and communicate internal states in a way that facilitates support and healing. However, the subjective nature of these scales also carries unseen paradoxes. For example, two people rating the same situation as an “8” might be experiencing vastly different intensity or kinds of distress. This highlights a deeper philosophical contemplation: numbers attempt to standardize that which resists standardization. Yet, by embracing this imperfection, EMDR invites a dialogue rather than dictating fixed truths.

The communication dynamic fostered by using SUD during EMDR also reflects a vital relational skill: tuning in to emotional nuance. A therapist’s invitation to rate discomfort encourages self-reflection, cultivating mindfulness of emotional shifts in real time. Equally, it builds trust, affirming that the client’s feelings matter as both valid and measurable. This dialogue is fundamentally cultural—rooted in the modern value of emotional intelligence, which emphasizes awareness, expression, and regulation of feelings as keys to well-being.

Looking beyond individual therapy, SUD’s use ties into how society at large negotiates discomfort, trauma, and healing. Media representations of trauma—from documentaries to novels—often oscillate between showing overwhelming emotional chaos and depicting recovery as rapid or fixed. EMDR’s method of titrating distress suggests a more nuanced reality: healing is fluid, uneven, and profoundly personal. This understanding helps challenge social narratives that stigmatize ongoing struggle or demand quick fixes.

Historically, approaches to trauma and distress have reflected shifting human perspectives on mind and body. Early cultural practices—such as communal storytelling, ritual dances, or shamanic healing—acknowledged emotional pain but framed it within collective, non-linear experiences. Modern psychotherapy’s preference for scale and structure contrasts yet extends these traditions. EMDR’s use of SUD is a contemporary bridge, combining precise measurement with the inherent subjectivity of lived experience.

One might wonder if the use of a numeric scale risks oversimplifying or even alienating clients whose distress defies easy categorization. Yet, the very act of asking “How intense is this right now?” prompts an internal dialogue that can bring fragmented feelings into awareness. Some critics argue that too much focus on measurement could reduce therapy to a mechanic checklist. But in practice, SUD is employed flexibly, adapting to each client’s pace, resilience, and cultural context.

The broader narrative here unfolds around how techniques like SUD in EMDR represent humanity’s ongoing attempt to balance order and chaos: to map the elusive inner landscape with tools that respect beauty and complexity. As technology and mental health fields progress—integrating biofeedback, virtual reality, and AI—this balance becomes more delicate and vital. How can numerical or technological frameworks support healing without overshadowing the richness of individual emotional experience?

This interplay, redolent of many life and work environments today, invites reflection on communication and trust. Whether in boardrooms or therapy rooms, the challenge remains to listen attentively, accommodate complexity, and allow space for evolving understanding. EMDR’s SUD scale resembles a small compass in a vast sea of subjective experience—an anchor that points not to certainty, but to intention and presence.

Understanding how SUD is used in EMDR therapy sessions reveals much about cultural attitudes toward emotion, healing, and narration. It invites us to consider how we quantify feelings and how that quantification affects connection and care. More than just a number, SUD functions as a bridge between the measurable and the deeply personal, shaping a more humane and responsive approach to psychological healing.

—

Irony or Comedy:

It’s fascinating that two clear facts coexist with a hint of irony: first, SUD is designed to measure deeply subjective feelings precisely with a simple 0-to-10 scale; second, human emotions often resist such neat categorization. Imagine exaggerating this: everyone reports distress exactly as 5 on the scale, regardless of their actual experience. Suddenly, EMDR sessions could be entirely standardized and impersonal, delivering therapy with robotic precision. The absurdity of this scenario echoes science fiction’s cautionary tales where human complexity is flattened by over-reliance on data. Yet, EMDR’s careful use of SUD hints at a more balanced reality where numbers serve but do not rule.

—

Opposites and Middle Way:

One tension at the heart of using SUD lies between subjective fluidity and objective measurement. On one side, some view emotional states as too dynamic and personal to be pinned down by numbers. For example, artists and poets often celebrate the ambiguity of feeling, arguing that attempts to quantify experience risk losing nuance. On the other side, clinicians and researchers advocate for measurement as essential for tracking progress and ensuring safety, much like a pilot relies on instruments during turbulent flights.

If one side dominates—say, dismissing emotional reporting entirely—therapy risks becoming cold and detached, potentially ignoring the patient’s voice. Alternatively, if therapy depends solely on subjective reports without any framework, it might lack clarity or direction.

The balanced approach found in EMDR and SUD use allows subjective experience to guide therapy within a simple scaffold. This reflects many real-world situations where structure supports freedom—whether in art, education, or relationships—and where opposites contribute to a more dynamic whole.

—

Current Debates, Questions, or Cultural Discussion:

Questions linger about how universal the SUD scale is across cultures. Different societies have diverse ways of expressing and interpreting distress; what rates an “8” in one context might be considered mild or extreme in another. There’s ongoing discussion in psychotherapy about how to adapt tools like SUD without imposing one-size-fits-all norms.

Another debate centers on whether repeated exposure to rating distress could increase self-monitoring to an unhelpful degree, potentially amplifying anxiety. Yet, others highlight its empowering potential, increasing clients’ awareness and agency.

Lastly, as digital mental health platforms grow, conversations arise about integrating SUD-like measures into apps and remote therapy. Can such tools replicate the nuanced, human attunement found in face-to-face sessions?

—

As we look at tools like SUD within EMDR therapy, we witness a microcosm of broader human efforts: grappling with unseen interior worlds, striving for connection and healing, and embracing the paradoxes embedded in being human. In a culture increasingly attuned to emotional balance and communication, such insights remind us that understanding and measuring feelings is less about certainty and more about making space—space for curiosity, compassion, and growth.

—

This reflection aligns with contemporary dialogues on communication, culture, and emotional intelligence, inviting continued exploration of how we relate to ourselves and each other in the journey toward healing.

—

The writing of this article was overseen by Peter Meilahn, Licensed Professional Counselor, Oregon, USA (Oregon License C9007).