She Was Told It Was Aging — It Was Lyme All Along
TOLD IT’S “JUST AGING”?
LYME DISEASE MAY BE MISSED
“They said it was aging—but something didn’t fit.”
A woman in her late 60s was getting weaker. Her joints ached. Her memory was slipping. Her balance felt off. She woke up exhausted, sometimes with her heart racing.
She was told it was aging. Then anxiety. Then nothing more could be done.
But when we looked closer, the pattern pointed to Lyme disease.
Quick Answer: Lyme disease in older adults is frequently misdiagnosed as aging, dementia, or other chronic conditions.
Clinical Insight: Atypical presentations and absent rash make Lyme disease harder to recognize in seniors—but outcomes can improve significantly with treatment.
Lyme disease is still being missed
Older adults with multisystem symptoms are often misdiagnosed or dismissed.
Instead of infection, they may be told it’s aging, depression, menopause, or stress.
When Lyme disease is missed—especially in older adults—the consequences can be severe.
Fortunately, published case reports show that recognition and treatment can dramatically change outcomes.
When Lyme disease looks like dementia or stroke
Lyme disease can mimic serious neurologic conditions in older adults.
Case 1: Reversible dementia in a 75-year-old man
A man was admitted to an Alzheimer’s unit with hallucinations, confusion, aggression, and insomnia. Imaging was unremarkable, but Lyme serology was positive.
After 21 days of IV ceftriaxone, many symptoms reversed.
Takeaway: Lyme neuroborreliosis can mimic dementia—but may be treatable.
Case 2: Stroke in an 83-year-old man
An older patient presented with sudden weakness and speech loss. No vascular risk factors were identified, but testing confirmed Borrelia.
After IV antibiotics, he stabilized.
Takeaway: Lyme should be considered in stroke without a clear cause.
Case 3: Recurrent strokes from cerebral vasculitis
A 58-year-old experienced repeated strokes in the same region over a year. Lyme serology was positive.
After doxycycline treatment, the strokes stopped.
Takeaway: Lyme-related vasculitis is rare but treatable.
Case 4: Neuroborreliosis without rash in an 84-year-old
An elderly patient developed confusion and headaches without a rash. Lyme testing was positive.
With early antibiotics, he fully recovered.
Takeaway: In older adults, neurologic symptoms may be the first or only sign.
Clinical takeaway
Lyme disease in older adults often presents atypically.
Symptoms may be attributed to aging or neurologic decline rather than infection.
Yet these cases show a consistent pattern:
- No classic rash or recalled tick bite
- Symptoms attributed to aging or dementia
- Delayed diagnosis
- Significant improvement after antibiotic treatment
Age should not exclude Lyme disease from the differential diagnosis.
Frequently Asked Questions
Can older adults get Lyme disease?
Yes. Lyme disease affects all age groups but is often under-recognized in seniors.
Why is Lyme disease missed in older adults?
Symptoms are often attributed to aging, and classic signs like rash may be absent.
Can Lyme disease mimic dementia?
Yes. Cognitive decline and confusion may occur and can improve with treatment.
Can Lyme disease cause stroke?
Yes. Lyme-related inflammation can affect blood vessels and lead to stroke-like symptoms.
Is it too late to treat Lyme disease in older adults?
Not necessarily. Even advanced symptoms may improve with appropriate therapy.
More on Lyme disease in older adults
- Lyme Disease and Dementia
- Neurologic Lyme With Normal Testing
- Lyme Carditis
- Brain Fog in Lyme Disease
- Lyme Disease Misdiagnosis
Related Reading
Lyme Disease Misdiagnosis
Lyme Disease and Dementia
Neurologic Lyme
Lyme Carditis
Brain Fog Lyme Disease
References
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- Case Rep Neurol Med. 2018. Ischemic stroke: do not forget Lyme neuroborreliosis
- BMC Infect Dis. 2023. Cerebral vasculitis and Lyme
- Eur J Case Rep Intern Med. 2025. Lyme neuroborreliosis in elderly patient
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
