Obsessive-compulsive disorder is almost always discussed in terms of the mind — intrusive thoughts, compulsive rituals, the exhausting loop of obsession and relief — but a majority of people living with OCD also experience a constellation of physical symptoms that rarely get named. At InfuseRVA Ketamine & Wellness, we work with patients whose OCD has not responded adequately to standard treatments, and one of the most consistent things we hear is that they had no idea their body was part of the picture.
Why OCD Has Physical Consequences
OCD is classified as a psychiatric condition, but its biology is deeply neurological. Research has established that OCD is driven by dysfunction in the cortico-striato-thalamo-cortical (CSTC) circuits — interconnected loops running between the cortex, striatum, thalamus, and back to the cortex — that regulate the brain’s ability to filter signals, inhibit repeated behaviors, and modulate emotional responses (Stein et al., 2023). These are not abstract pathways. They involve neurotransmitter systems — particularly serotonin, dopamine, and glutamate — that affect not just mood and cognition but also motor control, physiological arousal, and the regulation of the body’s stress response.
When CSTC circuits misfire, the brain can remain in a state of chronic hyperarousal. The fight-or-flight response — the system designed to mobilize the body in response to genuine threat — stays partially activated even when no external threat is present. This sustained physiological activation has real downstream effects on the body. It is not a metaphor. It is a measurable biological state, and it produces symptoms that are just as real as the obsessions and compulsions clinicians use to diagnose the condition.
Understanding this connection matters because many people with undiagnosed or undertreated OCD seek care for physical complaints without ever connecting them to their mental health. And many people who have been diagnosed with OCD have never been told that the fatigue, the poor sleep, the muscle tension — those are part of it too. Learning more about the full range of conditions we treat can be a helpful first step toward understanding how mental and physical health intersect.
Fatigue and the Energy Cost of OCD
Chronic fatigue is one of the most commonly reported but least discussed physical symptoms of OCD. The neurological explanation is straightforward: a brain operating under the sustained hyperarousal characteristic of OCD is consuming far more energy than a brain at rest. The ongoing effort required to resist obsessions, suppress compulsions, or simply get through a day while managing intrusive thoughts is cognitively and physiologically expensive. That expenditure accumulates. The result is a kind of exhaustion that is not relieved by sleep alone — because the same neurological dysregulation that drives daytime symptoms tends to disrupt sleep as well.
Fatigue in OCD is also compounded by the physical demands of compulsive behaviors themselves. Repetitive checking, counting, hand washing, arranging, or other rituals require motor effort and time. Patients who spend hours each day engaged in compulsive behavior — a common feature of moderate to severe OCD — are genuinely physically depleted in ways that go beyond the emotional toll.
Sleep Disruption: The Data
The relationship between OCD and sleep has been studied directly. A clinical study comparing 61 OCD patients to 100 healthy controls found that OCD patients showed significantly poorer sleep quality and more frequent sleep disturbances across multiple measures. OC symptom severity, depression severity, and trait anxiety were all independently correlated with poor sleep quality, with mediation analysis confirming that anxiety and depression mediate the relationship between OCD symptom severity and sleep outcomes (Segalàs et al., 2021).
What this means practically is that sleep disruption in OCD is not simply a matter of lying awake worrying. The neurological dysregulation that underlies OCD affects the mechanisms of sleep itself. Patients with OCD show higher rates of delayed sleep phase disorder — a condition in which the body’s internal circadian clock is shifted significantly later than the conventional sleep schedule — at rates far exceeding the general population. They also report more difficulty falling asleep, more nighttime awakenings, and more non-restorative sleep overall. An exhausted brain tends to have a lower threshold for triggering obsessive cycles, which creates a reinforcing pattern: poor sleep worsens OCD symptoms, and OCD symptoms worsen sleep.
Muscle Tension, Headaches, and Gastrointestinal Symptoms
The body’s sustained stress response has predictable muscular and physical effects. Chronic hyperarousal keeps muscles in a state of partial contraction, producing tension that accumulates in the neck, shoulders, jaw, and back. Many patients with OCD experience frequent headaches, jaw pain or bruxism (involuntary teeth grinding), and generalized body aches without an obvious structural cause. These are manifestations of a nervous system that cannot fully downregulate.
Gastrointestinal symptoms are also common. The gut contains an extensive network of neurons — sometimes called the enteric nervous system — that communicates bidirectionally with the brain. Chronic psychological stress and neurological dysregulation are well-established triggers for gastrointestinal discomfort, nausea, irritable bowel-type symptoms, and appetite disruption. A large international survey of nearly 500 adults with OCD found that 71.4% reported comorbid somatic health issues, with gastrointestinal conditions and cardiometabolic conditions among the most frequently cited (Fernández de la Cruz et al., 2024).
These physical comorbidities are not coincidental. They are, in many cases, direct downstream effects of the same neurological dysregulation driving the psychiatric symptoms. Our blog post on what an OCD attack feels like explores these overwhelming symptom experiences in more detail.
Health Anxiety and Somatic OCD
A specific subtype of OCD involves what clinicians call somatic or sensorimotor obsessions — a form in which the focus of obsessive attention is the body itself. Patients with this presentation become hyperaware of automatic physical processes: breathing, swallowing, blinking, heartbeat. The more attention they direct toward these processes, the more intrusive the awareness becomes. This can produce genuine physical discomfort — difficulty swallowing, a feeling of needing to consciously regulate breathing, awareness of the heartbeat that becomes impossible to ignore — that is driven not by a structural physical problem but by the attentional loop characteristic of OCD.
This form of OCD is frequently misunderstood, both by patients and by providers who may not recognize it. Patients may cycle through medical appointments seeking explanations for their physical symptoms, only to receive normal test results, without anyone connecting those symptoms to their OCD. This is one of the reasons a thorough evaluation is so important — the physical experience is real, even when its origin is neurological rather than structural.
When Standard Treatments Have Not Been Enough
The established first-line treatments for OCD — cognitive-behavioral therapy with exposure and response prevention (ERP), and SSRI medications — are effective for many patients. But a meaningful portion of people with OCD do not achieve adequate relief through these approaches alone. For those patients, the physical burden of the condition continues alongside the psychiatric one, often for years.
At InfuseRVA, we work with patients in the Richmond area, including South Chesterfield, Chester, and Mechanicsville, whose OCD has not responded to standard treatment. We offer IV ketamine infusion therapy, which works through glutamate system modulation rather than serotonin — a mechanistically distinct approach for patients whose condition has not responded adequately to SSRI-based care. Ketamine may help reduce the severity of OCD symptoms for some patients, which in turn may ease the physical burden those symptoms carry. Results vary by individual, and ketamine is not appropriate for everyone; every patient who comes to us is evaluated by our medical team before any treatment begins.
We also offer SPRAVATO® for patients who qualify. SPRAVATO® is FDA-approved for treatment-resistant depression and for major depressive disorder with acute suicidal ideation or behavior, and is not indicated for OCD; if a patient has both treatment-resistant depression and OCD, SPRAVATO® may be considered specifically for the depressive component of their care.
Two barriers we hear about consistently are fear and access. Many patients with OCD have spent years in a cycle of seeking help and not finding sufficient relief, and that history can make it hard to try something new. We understand that. We also hear that the Monday-through-Friday, daytime-only schedule creates real logistical challenges for working patients — and we acknowledge that honestly. What we can offer is a thorough, no-pressure consultation to discuss whether what we do may make sense for your situation. To learn more about what sets our approach apart, visit our page on OCD treatment in South Chesterfield.
Frequently Asked Questions
Can OCD cause physical pain? Yes — the chronic muscle tension and hyperarousal associated with OCD can produce headaches, jaw pain, back and neck tension, and generalized body aches. These are physiological consequences of a nervous system that remains in a state of elevated activation, not separate conditions requiring separate explanations.
Why am I always exhausted even when I sleep enough? Fatigue in OCD can stem from multiple sources: the cognitive and physiological energy consumed by managing obsessive thoughts and compulsive urges, sleep architecture disruptions caused by neurological dysregulation, and the physical demands of compulsive behaviors themselves. Sleep quantity alone does not address the underlying neurological state driving the fatigue.
Is it OCD if my symptoms are mainly physical? It can be. Somatic or sensorimotor OCD — characterized by hyperawareness of automatic bodily processes — is a recognized subtype of OCD in which the physical experience is the primary focus of obsessive attention. A proper evaluation by a mental health professional familiar with OCD presentations is the appropriate path to clarifying what is driving your symptoms.
Are the physical symptoms of OCD treatable? Treating OCD effectively — whether through therapy, medication, or other interventions — may reduce the physical symptoms that accompany it. When the neurological dysregulation underlying OCD is addressed, its downstream effects on sleep, muscle tension, and fatigue may also improve. Results vary by individual, and a comprehensive approach addressing both the psychiatric and physical dimensions of care is generally most effective.
Can ketamine help with OCD? Research on ketamine for OCD is ongoing and shows promise for some patients, particularly those who have not responded to SSRI-based treatments. Ketamine works through the glutamate system rather than serotonin, which may be relevant for patients whose OCD has not responded to serotonin-targeted approaches. We evaluate each patient individually and discuss whether ketamine therapy may be appropriate based on their specific history and clinical profile. For a deeper look at how ketamine infusions may address OCD, see our overview of ketamine infusions for OCD explained.
Key Takeaways
- OCD is rooted in dysfunction in cortico-striato-thalamo-cortical neural circuits that regulate arousal, behavior, and the stress response — with measurable physical consequences.
- Chronic fatigue, sleep disruption, muscle tension, headaches, and gastrointestinal symptoms are common physical manifestations of OCD that are often unrecognized as part of the condition.
- Research confirms that OCD patients show significantly poorer sleep quality than healthy controls, with OCD symptom severity independently correlated with sleep outcomes.
- Somatic or sensorimotor OCD is a recognized subtype in which physical experiences — hyperawareness of breathing, heartbeat, swallowing — are themselves the focus of obsessive attention.
- For patients whose OCD has not responded to standard treatments, mechanistically distinct options such as IV ketamine infusion therapy may be worth exploring with a qualified medical team.
OCD does not live only in the mind, and the physical toll it takes deserves to be taken seriously. If you are in the Richmond area and your OCD has not responded adequately to the treatments you have tried, we encourage you to reach out to us at InfuseRVA. Call804-895-4636 or contact us to schedule a consultation — we will listen to your full history and give you an honest assessment of what we may be able to offer.
References
Fernández de la Cruz, L., Isomura, K., Lichtenstein, P., & Mataix-Cols, D. (2024). General somatic health and lifestyle habits in individuals with obsessive-compulsive disorder: An international survey. BMC Psychiatry, 24, 106. https://pubmed.ncbi.nlm.nih.gov/38317127/
Segalàs, C., Labad, J., Salvat-Pujol, N., Real, E., Alonso, P., Bertolín, S., Jiménez-Murcia, S., Soriano-Mas, C., Monasterio, C., Menchón, J.M., & Soria, V. (2021). Sleep disturbances in obsessive-compulsive disorder: Influence of depression symptoms and trait anxiety. BMC Psychiatry, 21, 42. https://pmc.ncbi.nlm.nih.gov/articles/PMC7809865/
Stein, D.J., Fineberg, N.A., & Chamberlain, S.R. (2023). Obsessive-compulsive disorder: Etiology, neuropathology, and cognitive dysfunction. Brain and Behavior, 13(6), e3000. https://pmc.ncbi.nlm.nih.gov/articles/PMC10275553/
Medical Disclaimer
The information in this blog is for educational purposes only and does not constitute medical advice. Treatment for OCD, including IV ketamine infusion therapy, should only be pursued under the supervision of a licensed medical professional familiar with your complete medical and psychiatric history. Individual results vary. Not all patients are candidates for ketamine therapy. If you are experiencing a mental health crisis or thoughts of self-harm, please call or text 988 to reach the Suicide and Crisis Lifeline or go to your nearest emergency room.
