Chronic Fatigue and Brain Fog Deserve Careful Attention
Persistent fatigue and brain fog can affect every part of daily life. It can become harder to keep up with work, remember details, make decisions, stay present in conversations, or manage the routines that once felt simple.
These symptoms are real, but they are not a diagnosis on their own. Fatigue and cognitive difficulties can occur with many conditions, including sleep disorders, depression, anxiety, chronic pain, medication effects, thyroid concerns, anemia, infections, long COVID, and myalgic encephalomyelitis/chronic fatigue syndrome, often called ME/CFS.
For people in Toledo and Northwest Ohio, the most important starting point is not to assume that every case of exhaustion has the same explanation. It is to take symptoms seriously and look at the full clinical picture.
ME/CFS and Long COVID Require a Thoughtful Evaluation
ME/CFS is a complex, chronic illness that can involve profound fatigue, unrefreshing sleep, cognitive difficulties, dizziness, pain, and a worsening of symptoms after physical or mental activity. That worsening is known as post-exertional malaise, or PEM. It can occur after an activity that may have seemed manageable before illness.
Brain fog is also commonly reported by people with long COVID. Fatigue, reduced stamina, concentration difficulties, memory concerns, and symptoms that worsen after exertion can all be part of a post-COVID condition. These experiences deserve respect and clinical attention.
At the same time, not every person with fatigue or brain fog has ME/CFS or long COVID. A careful assessment can help distinguish between possible causes and identify symptoms that need more immediate evaluation.
Why a Broad Assessment Matters
Persistent fatigue can be frustrating because it often has more than one contributing factor. Sleep disruption, chronic stress, mood symptoms, pain, medical conditions, nutrition, medications, substance use, and work demands can all affect energy and concentration.
A thorough evaluation may include discussion of:
- When symptoms began and whether they followed an illness, injury, medication change, or major life stressor
- Sleep quality, including whether sleep feels restorative
- Symptoms that worsen after physical, mental, or emotional exertion
- Mood, anxiety, trauma history, and daily functioning
- Current medications, supplements, alcohol use, and other substances
- Chronic pain, dizziness, headaches, heart symptoms, or other physical concerns
- Medical testing or specialist care that may already be underway
For some people, the next step may be a primary care evaluation, sleep assessment, mental health support, specialty referral, or coordination with several providers. No infusion service should replace that process.
NAD+ IV Therapy: What It Is and What It Is Not
NAD+ is a coenzyme involved in normal cellular metabolism. It has become a common topic in wellness settings because of its role in energy-related cellular processes.
At Awakenings, we offer NAD+ IV therapy as a clinician-supervised wellness service. Some people ask about it when they are dealing with low energy, fatigue, or cognitive concerns.
However, current evidence does not establish NAD+ IV therapy as a treatment for ME/CFS, long COVID, chronic fatigue, or brain fog. It should not be presented as a cure, a replacement for diagnostic evaluation, or a predictable way to restore cognitive clarity or energy.
Research into NAD+ and related compounds is still developing. Studies have been limited, have involved different patient groups and outcomes, and do not yet provide an evidence-based protocol for treating fatigue-related conditions with IV NAD+.
Patients considering NAD+ therapy should discuss their health history, current symptoms, medications, goals, and expectations with a qualified clinician. Our overview of NAD+ therapy in Toledo provides additional information about how the service is described at Awakenings.
Where Ketamine May Fit, and Where It Does Not
IV ketamine infusion therapy is not a treatment for ME/CFS, long COVID, chronic fatigue, or brain fog. It should not be used as a substitute for medical evaluation when someone has persistent exhaustion or cognitive symptoms.
Ketamine may be discussed in a different context when a patient has a separately evaluated psychiatric or pain-related condition for which treatment options are being considered. For example, a person with depression may experience fatigue, slowed thinking, poor concentration, or low motivation as part of that condition. In those circumstances, treatment decisions should focus on the diagnosed condition, overall safety, current medications, and the person’s treatment history.
IV ketamine for psychiatric indications is considered off-label use. It is not a standard first-line treatment for depression, and it is not appropriate for every patient. A qualified clinical evaluation is necessary before determining whether it belongs in a broader care plan.
For people who are also navigating depression, our article on IV ketamine for depression explains more about the evaluation process and questions patients may want to discuss with a provider.
Supportive Care Should Match the Person, Not Just the Symptom
When fatigue and brain fog become persistent, patients often need more than a single appointment or a generic recommendation to “rest more.” They may need support that addresses sleep, stress, mood, physical symptoms, work demands, medical follow-up, and daily routines.
At Awakenings, our holistic wellness services are intended to support conversations about mind-body wellbeing, daily habits, and personal goals. These services can be part of a broader wellness plan, but they do not replace primary care, neurology, sleep medicine, mental health treatment, or other specialty care when those services are needed.
We also offer integration coaching as supportive guidance around a treatment experience. Integration coaching may provide time to reflect on routines, values, goals, and practical next steps.
Integration coaching is not psychotherapy, medical diagnosis, psychiatric treatment, or crisis care. It should not be used in place of a licensed therapist, psychiatrist, primary care clinician, or appropriate specialist.
When to Seek Prompt Medical Care
Fatigue and brain fog should be evaluated promptly when they come with concerning symptoms such as chest pain, fainting, severe shortness of breath, new weakness, confusion, major changes in vision or speech, persistent fever, rapid worsening, or thoughts of self-harm.
If you are experiencing an emergency, call 911 or seek emergency medical care.
If low mood, hopelessness, anxiety, or thoughts of self-harm are part of what you are experiencing, call or text 988 for the Suicide & Crisis Lifeline.
Frequently Asked Questions
Is brain fog a medical diagnosis?
Brain fog is a common term for symptoms such as trouble concentrating, slowed thinking, forgetfulness, difficulty finding words, or feeling mentally clouded. It is not a diagnosis by itself. A clinician can help evaluate possible causes based on your symptoms, medical history, medications, sleep, mood, and other relevant factors.
Can ME/CFS cause brain fog?
Yes. Cognitive difficulties are commonly reported in ME/CFS and may include problems with concentration, memory, processing information, and sustaining attention. ME/CFS also involves other symptoms, including unrefreshing sleep and post-exertional malaise.
Can long COVID cause fatigue and brain fog?
Yes. Fatigue, brain fog, and symptoms that worsen after exertion are commonly reported in long COVID. Because long COVID can affect people differently, it is important to discuss persistent symptoms with a qualified clinician.
Does NAD+ IV therapy treat chronic fatigue or brain fog?
NAD+ IV therapy is not an established treatment for chronic fatigue, ME/CFS, long COVID, or brain fog. It may be discussed as a wellness service, but current evidence does not show that it reliably treats these conditions or produces predictable improvements in energy or cognition.
Can ketamine help with brain fog?
Ketamine is not a treatment for brain fog itself. In some cases, concentration problems and low energy can occur alongside depression or chronic pain. Any discussion of ketamine should focus on the diagnosed condition, the person’s full medical history, and whether an off-label treatment evaluation is appropriate.
How do I know whether my fatigue needs medical evaluation?
Consider speaking with a qualified clinician when fatigue or brain fog persists, affects daily functioning, is not improving, or occurs with other concerning symptoms. Medical evaluation is especially important when symptoms follow an infection, worsen after exertion, involve major sleep disruption, or are accompanied by dizziness, pain, mood changes, or other health concerns.
Key Takeaways
- Chronic fatigue and brain fog are real symptoms, but they can have many possible causes.
- ME/CFS and long COVID can involve fatigue, cognitive difficulties, unrefreshing sleep, and symptoms that worsen after exertion.
- Persistent fatigue deserves a careful medical and mental health evaluation rather than a one-size-fits-all solution.
- NAD+ IV therapy is not an established treatment for ME/CFS, long COVID, chronic fatigue, or brain fog.
- IV ketamine is not a treatment for fatigue or brain fog and should only be considered in the context of an appropriate clinical evaluation for a separately diagnosed condition.
- Holistic wellness services and integration coaching may offer supportive guidance, but they do not replace medical care, psychotherapy, psychiatric treatment, or specialty evaluation.
Conclusion
Living with persistent exhaustion and cognitive fog can be discouraging, especially when rest does not seem to make a meaningful difference. Your symptoms deserve to be taken seriously, and the next step should be a thoughtful effort to understand what may be contributing to them.
At Awakenings by Northwest Ohio Ketamine in Toledo, we believe patients deserve clear information about the limits of wellness services as well as the importance of individualized care. If you are dealing with ongoing fatigue, cognitive concerns, or overlapping mood and pain symptoms, schedule a consultation with our team to discuss whether our services may be appropriate for your situation.
About Dr. William James
Dr. William James, MD, leads Awakenings by Northwest Ohio Ketamine in Toledo, Ohio. His clinical background includes anesthesiology and pain management.
Patient care at Awakenings also includes Dr. Nadeem Moghal, whose background includes fellowship training at the Cleveland Clinic Foundation Pain Management Center, and Ben Wagner, PMHNP-BC, a board-certified Psychiatric Mental Health Nurse Practitioner.
When fatigue, mood symptoms, pain, sleep disruption, medication considerations, or other health concerns overlap, individualized assessment and coordination with the broader care team are important.
No blog post can determine whether NAD+ IV therapy, ketamine treatment, or any other service is appropriate for a specific person. That decision requires a qualified clinical evaluation.
Works Cited
Centers for Disease Control and Prevention. (2024, May 10). https://www.cdc.gov/me-cfs/hcp/clinical-overview/index.html. Clinical overview of ME/CFS.
Centers for Disease Control and Prevention. (2024, May 10). https://www.cdc.gov/me-cfs/signs-symptoms/index.html. Symptoms of ME/CFS.
Centers for Disease Control and Prevention. (2026, March 9). https://www.cdc.gov/long-covid/signs-symptoms/index.html. Long COVID signs and symptoms.
Gindri, I. M., Ferrari, G., Pinto, L. P. S., Bicca, J., dos Santos, I. K., Dallacosta, D., & Roesler, C. R. M. (2024). https://doi.org/10.1152/ajpendo.00242.2023. Evaluation of safety and effectiveness of NAD in different clinical conditions: A systematic review. American Journal of Physiology-Endocrinology and Metabolism, 326(4), E417–E427.
National Institute for Health and Care Excellence. (2021). https://www.nice.org.uk/guidance/ng206. Myalgic encephalomyelitis (or encephalopathy)/chronic fatigue syndrome: Diagnosis and management.
U.S. Department of Veterans Affairs & U.S. Department of Defense. (2022). https://www.healthquality.va.gov/guidelines/MH/mdd/VADODMDDCPGFinal508.pdf. VA/DoD clinical practice guideline for the management of major depressive disorder.
Medical Disclaimer
This content is provided by Awakenings by Northwest Ohio Ketamine for educational purposes only and does not constitute medical advice. It is not intended to diagnose, treat, cure, or prevent any condition. NAD+ IV therapy is not an established treatment for ME/CFS, long COVID, chronic fatigue, or brain fog. IV ketamine is not a treatment for chronic fatigue or cognitive symptoms and is considered off-label for psychiatric indications. Individual experiences vary. Always consult a qualified healthcare provider before making treatment decisions.
If you are experiencing a medical emergency, call 911 or seek emergency care. If you are experiencing a mental health crisis or thoughts of self-harm, call or text 988.