Lyme vs Long COVID: Why Symptoms Overlap and Get Missed
Symptoms often look identical
Patients are caught between diagnoses
The pattern is frequently overlooked
Lyme vs long COVID is one of the most common and confusing clinical questions today.
“Is this Lyme… or long COVID?”
Patients ask this with a mix of fear and exhaustion. They describe brain fog, dizziness, fatigue, and a nervous system that feels unstable.
This overlap reflects a broader pattern seen in neurologic Lyme disease, where infection affects multiple systems.
Here’s where the confusion begins.
What the Research Shows About Lyme vs Long COVID
The overlap between Lyme disease and long COVID is not theoretical—it is documented.
Studies of long COVID demonstrate increased rates of memory problems, slowed thinking, and difficulty concentrating—symptoms identical to those reported in Lyme disease.
In clinical observations, patients with a history of Lyme disease who later developed COVID-19 often reported persistent symptoms consistent with long COVID.
This reinforces how closely these conditions can align.
Where the Symptoms Converge
Brain Fog That Disrupts Thinking
Patients from both groups describe the same experience: losing words mid-sentence, difficulty focusing, and reduced mental clarity.
A Nervous System That Misfires
Dysautonomia connects Lyme vs long COVID more than almost anything else.
Symptoms include:
- Dizziness
- Heart palpitations
- Temperature instability
- Feeling faint or off balance
These patterns are explained further in autonomic dysfunction in Lyme disease.
Fatigue That Feels Like a Crash
This is not typical tiredness. Patients describe a sudden shutdown after minimal effort, often followed by prolonged recovery.
Pain That Takes Multiple Forms
Headaches, nerve pain, and muscle aches appear in both conditions, sometimes shifting over time.
The Pattern Most Doctors Miss: Cycling Symptoms
One of the most important clues in Lyme vs long COVID is the waxing and waning of symptoms.
Patients often describe periods of relative normalcy followed by sudden crashes.
This pattern is often missed because fluctuating symptoms are mistaken for stress or recovery.
Instead, symptom cycling reflects underlying biology.
For more on this pattern, see why Lyme symptoms come and go.
Why Lyme vs Long COVID Confusion Happens
Most clinicians are trained to expect stable, predictable illness patterns.
Lyme disease and long COVID do not follow those rules.
Symptoms may:
- Shift between systems
- Appear and disappear
- Persist despite normal testing
This leads to common responses:
- Symptoms attributed to anxiety
- Dismissal due to normal labs
- Over-reliance on a single diagnosis
These issues are closely tied to Lyme disease misdiagnosis, where atypical presentations are often overlooked.
Why This Matters
Patients are not confused—the conditions themselves overlap.
When symptoms are forced into a single diagnosis, important aspects of illness may be missed.
Recognizing overlap allows for more accurate evaluation and better patient care.
Clinical Perspective
Lyme disease and long COVID share key features of post-infectious neuroinflammatory illness.
Instead of focusing only on labels, clinicians should evaluate:
- Symptom patterns
- Nervous system involvement
- Immune and inflammatory factors
This approach may lead to more effective management.
Clinical Takeaway
Lyme vs long COVID is not always an either-or diagnosis.
Both conditions may share overlapping mechanisms and symptom patterns.
Recognizing this overlap can reduce misdiagnosis and improve care.
If You’re Trying to Understand Your Symptoms
Many patients feel caught between diagnoses, unsure which condition explains their symptoms.
Your experience is valid—and the overlap is real.
For a deeper overview, see Long COVID and Lyme disease: what patients need to know.
Related Reading
- Long COVID and Lyme Disease
- Autonomic Dysfunction and Lyme Disease
- Lyme, Long COVID, or Both?
- Lyme Disease Symptoms Guide
References
Dr. Daniel Cameron, MD, MPH
Lyme disease clinician with over 30 years of experience and past president of ILADS.
Symptoms • Testing • Coinfections • Recovery • Pediatric • Prevention
I am a 72 yr old married female who had a mild case of Covid in October 2022. We (my husband and I) had taken the Covid-19 vaccinations after the infection. We got along afterwards very well and have had no Covid vaccinations since! I was diagnosed with Parkinson’s Disease in 2012 by a UNC-Ch movements disorder neurologist, Dr Nina Browner, MD. She had me in top shape and ready to do anything I needed to do. Life was good on the farm…until Sept/October, 2023. I was taken to local hospital where every medical test that could be done was done, but labs said I was normal. At this point, I was totally out of it! I lost almost 5 months of my life. I lost my memory, I couldn’t walk, talk, communication was very limited, food was a foreign forkful of mush so I would not eat! I was moved to ECU Health in Greenville where I stayed for 7-9 more days. I saw a hospital neurologist ONCE. He read my chart and saw the PD diagnosis, looked at my husband and said, “she has Parkinson’s”, turned and walked out never to be seen again. I was still incapacitated and had to be cared for by my husband and 2 grown sons while in the hospital. I didn’t communicate, so somebody had to stay with me to make sure my PD meds particularly were given. They sent me home with NO DIAGNOSIS and said I needed home health! I was unloaded by the ambulance EMTs put in my bed and they left! The drs at the local level hospital had already tested for everything imaginable, so they fell into trying to rehab me and get home health involved. My men were caught in something they never thought possible. Hospital said put me in a rehab, my family refused, and hired a wonderful lady to help me for what lay ahead! All of this information was told to me by my husband and sons over the course of almost a year! There’s still things coming out that I’ve never heard before!
I never was offered a Lymes test until February 2024. We had to request it be done. It was a weak positive, but it was the first positive anything I had gotten in the last 6+ months! I started Doxycycline that very day.
I could feel a difference within 3rd day! I was getting better! And without very much help from the medical community I’ve been going to all my adult life! No one will even acknowledge the test. All I have heard repeatedly is “ we don’t have that tick here”! One exception is my PD neurologist, Dr Browner. I wouldn’t have gotten this far without her guidance and caring. I love her!
So much has happened since that day, Feb 28, 2024. There’s not enough time nor paper to put it on.i can tell you that it’s one of the hardest things my family has had to do for me. I praise the Lord for every day He gives me with my family. But “ it ain’t over till the fat lady sings”. I am still fighting and the farther I get, the more I find out there’s not a Dr in eastern NC who even wants to hear about Lymes much less treat you! I’ve been digging thru the internet for years only to find out that there’s help available but it’s far away, expensive and not very reliable nor helpful because distance is a major factor. I have been reading nearly all of Dr Cameron’s posts and blogs and see myself in nearly every one of them. Today, the blog introduced me to the link between COVID and Lymes. Add to that Parkinson’s Disease, that was once believed to be handled, isn’t !! I need help from somebody! I am a shell of who I used to be. My life is much smaller. The brain fog and inability to properly comprehend things, stops me from driving. Memory is horrible and I lose myself in a conversation about midway! I have uninvited relapses and not much ammunition to fight them! This is just the tip of the iceberg, Dr Cameron. I need some help and my husband of 53 yrs and 2 sons (51 &48) need help to at least be comforted that I’m heading in the right direction. Thank you! Benita Wells
I an sorry to hear how tortuous your journey has been. I have Lyme disease patients share similar stories. Keep working on an answer for you and your husband
I’m going through the same thing. I’m not sure if I got reinfected or covid brought my Lyme/babesia back out of remission. My feet hurt, especially my big toes, my thumbs, stiff neck, chills and night sweats. I’m miserable. I have zero energy and my brain fog makes me not wanna do anything or go anywhere because I can’t think or function properly. I live in SC so there’s not much Lyme help here. I wish I could get my old doctor Dr. Richard Horowitz back in NY to help. I had to beg a new Rheumatologist to put me on Doxy. She only gave me 4 weeks when I asked for minimum of 8. But at this point I’ll take anything for relief. And if it helps, I’ll beg for 4 more weeks to hopefully knock it back down. We need the government to get involved and make Lyme and confections covered under insurance. There’s too many of us suffering and dying from this horrible disease. 💚
Yes! This is so true!!! I used to be able to recognize fellow Lyme disease sufferers by the way they walked. I had Lyme for 9 years with no help from anyone but a wise doctor in Wisconsin. Brain fog, vertigo, aches and pains etc… Fortunately I was able to do a good enough imitation of normal to keep working. It was another wise doctor in st. paul who finally cured me in 2020. Thanks also to Dr. Cameron for website information about double vision in Lyme, and my eye doctor here who believed me. (I still have the double vision and residual damage in my left knee.) I hope the existance of long covid will help convince the government and other medical professionals of the reality of Lyme disease.
Covid was just put out here to confuse the diagnosis of tick bourn infections!! So it can still be hid and brushed under the rug! Sorry for all you have been through!
Hi Dr. Cameron,
It’s Gerilynn, one of your first patients that you treated for Lyme. I hope you remember me. Mostly, doing well from my diagnosis of Lyme over 30 years ago. I have managed my symptoms well over the years by exercising, consuming very healthy food, acupuncture, meditation, Tai Chi, weight loss, Yoga, and keeping a positive attitude. Retirement has been wonderful. I have 2 grandchildren which keeps my serotonin at extremely beneficial levels. However, most importantly is your support, expertise and your medical intervention is what will always be the main reason for this healthful journey of wellness. I think so highly of your expertise and respect your compassion and incredible support since we collaborated together. Have a safe and happy holiday. Love, Gerilynn
I don’t forget you. I am 30+ years older. I am happy you reached out.
Thank you Dr. Cameron,
Normal tilt table after 70 days of your meds and care. Before I came to you a Florida neurologist told me it was Parkinson’s. Thank you for being so persistent and knowledgeable and figuring out it was two tick borne diseases as well as Long COVID. People Go see Dr Cameron!!
Lp