Many Florida patients diagnosed with Lyme disease don’t realize that their symptoms may be complicated by additional tick-borne infections. Babesia, Bartonella, and other co-infections frequently accompany Lyme disease, creating complex clinical pictures that require specialized diagnostic approaches and comprehensive treatment strategies. At Northeast Florida Internal Medicine, Dr. Elyssa Blissenbach provides expert diagnosis and treatment for the full spectrum of tick-borne illnesses affecting Florida residents.

Understanding Tick-Borne Co-infections

A single tick bite can transmit multiple pathogens simultaneously. Research indicates that patients with Lyme disease have co-infections in 30-65% of cases, depending on geographic region and tick species. These co-infections can significantly impact symptom severity, treatment response, and recovery outcomes.

The term “co-infection” refers to any infection transmitted alongside Lyme disease or acquired separately from another tick bite. The most common tick-borne co-infections in the Southeast include Babesia (babesiosis), Bartonella (bartonellosis), Ehrlichia (ehrlichiosis), Anaplasma (anaplasmosis), and various Rickettsia species.

Co-infections complicate Lyme disease diagnosis and treatment in several ways. They can produce overlapping symptoms that make clinical diagnosis challenging. Different pathogens may require different antibiotic classes, necessitating combination therapy. Some co-infections can suppress immune function, making Lyme disease more difficult to treat. Additionally, the presence of multiple infections can intensify symptoms and prolong recovery time.

Babesia: The Malaria-Like Co-infection

Babesia is a parasitic infection that invades red blood cells, similar to malaria. Several Babesia species affect humans, with Babesia microti and Babesia duncani being most common in the United States. While traditionally associated with the northeastern states, Babesia is increasingly recognized in Florida and other southeastern states.

Symptoms of Babesiosis

Babesia infection can range from asymptomatic to life-threatening, particularly in individuals with compromised immune systems or those who have had their spleen removed. Common symptoms include:

• Fever and chills: Often severe and cyclical, occurring in patterns
• Severe fatigue: Often described as crushing exhaustion that doesn’t improve with rest
• Night sweats: Drenching sweats that may require changing bed linens
• Air hunger: A distinctive symptom where patients feel they cannot get enough air, even when oxygen levels are normal
• Headaches: Often severe and persistent
• Muscle aches and weakness: Generalized body pain and decreased strength
• Dark urine: Resulting from hemolysis (red blood cell breakdown)
• Enlarged liver or spleen: Detectable on physical examination or imaging

The “air hunger” symptom is particularly characteristic of Babesia and can help differentiate it from other infections. Patients describe feeling short of breath or unable to get a satisfying breath, despite normal breathing rates and oxygen saturation levels.

Diagnosing Babesiosis

Babesia diagnosis can be challenging because standard blood tests may miss the infection. Dr. Blissenbach uses multiple diagnostic approaches:

• Blood smear examination: Microscopic examination of blood can reveal parasites within red blood cells, though sensitivity is low except during acute infection
• PCR testing: Polymerase chain reaction tests detect Babesia DNA in blood samples
• Antibody testing: Measures immune response to Babesia, though antibodies may take weeks to develop
• FISH testing: Fluorescent in situ hybridization is a newer, highly sensitive test for Babesia

Because no single test is 100% sensitive, Dr. Blissenbach often uses a combination of testing methods and relies heavily on clinical presentation when diagnosing babesiosis.

Treating Babesiosis

Babesia requires different treatment than Lyme disease because it’s a parasite rather than a bacterium. Standard treatment typically involves:

• Antiparasitic medications (such as atovaquone or combination therapy with azithromycin and atovaquone)
• Treatment duration of at least 4-6 weeks, often longer in chronic cases
• Monitoring for hemolytic anemia through regular blood counts
• Supportive care to manage symptoms and support detoxification

Some patients experience significant Herxheimer reactions when beginning Babesia treatment, requiring careful dose adjustment and detoxification support.

Bartonella: The Stealth Infection

Bartonella species are bacteria that can infect blood vessels and various organs throughout the body. Multiple Bartonella species can cause human disease, with Bartonella henselae (cat scratch disease) and Bartonella quintana being most recognized. However, emerging research suggests many other Bartonella species may cause human infection.

While cat scratches and bites are well-known transmission routes, ticks also transmit Bartonella. The infection can be particularly difficult to diagnose and treat, earning it a reputation as a “stealth infection.”

Symptoms of Bartonellosis

Bartonella produces a diverse array of symptoms affecting multiple body systems:

• Neurological symptoms: Brain fog, cognitive dysfunction, seizures, tremors, balance problems, and neuropathy
• Psychiatric symptoms: Anxiety, panic attacks, depression, rage episodes, and mood swings
• Pain syndromes: Severe burning pain, often in the soles of feet, is highly characteristic; shin pain, bone pain, and sharp, ice-pick-like pains
• Skin manifestations: Stretch mark-like striations (bartonella striae), rashes, and subcutaneous nodules
• Cardiovascular symptoms: Chest pain, irregular heartbeat, and inflammation of blood vessels
• Eye problems: Floaters, blurred vision, and inflammation
• Swollen lymph nodes: Particularly in the neck and axillary regions
• Gastrointestinal symptoms: Abdominal pain, nausea, and digestive problems

The characteristic burning sensation in the feet and the appearance of stretch mark-like striations are particularly suggestive of Bartonella infection. These striae typically appear on areas of the body where stretch marks wouldn’t normally occur, such as the upper arms, thighs, or back.

Diagnosing Bartonellosis

Bartonella is notoriously difficult to diagnose through laboratory testing. The bacteria grow slowly in culture, hide within cells, and trigger inconsistent antibody responses. Dr. Blissenbach uses several diagnostic approaches:

• Clinical diagnosis: Recognition of characteristic symptom patterns often provides the strongest diagnostic evidence
• Antibody testing: Limited sensitivity but can be helpful when positive
• PCR testing: More sensitive than culture but still misses many cases
• FISH testing: Specialized test that may detect Bartonella when other tests are negative

Many cases of Bartonella are diagnosed clinically based on symptom presentation, particularly when characteristic symptoms like burning foot pain or bartonella striae are present.

Treating Bartonellosis

Bartonella treatment typically requires:

• Combination antibiotic therapy targeting both intracellular and extracellular bacteria
• Extended treatment duration, often 4-6 months or longer
• Careful medication selection based on the patient’s specific symptom profile
• Management of neuropsychiatric symptoms during treatment
• Support for detoxification and Herxheimer reaction management

Bartonella can trigger intense Herxheimer reactions, particularly neurological and psychiatric symptoms. Dr. Blissenbach carefully monitors patients and adjusts treatment to manage these reactions while maintaining therapeutic progress.

Other Common Co-infections

Ehrlichiosis and Anaplasmosis

Ehrlichia and Anaplasma are bacterial infections that affect white blood cells. Both are transmitted by ticks and can cause acute, severe illness or more subtle chronic symptoms. Common manifestations include:

• Fever, chills, and headache
• Muscle aches and fatigue
• Nausea and vomiting
• Low white blood cell count, low platelet count, and elevated liver enzymes
• Confusion and altered mental status in severe cases

Diagnosis relies on antibody testing, PCR, and blood smear examination. Treatment involves antibiotics from the tetracycline family, with doxycycline being most commonly used.

Rickettsia (Including Rocky Mountain Spotted Fever)

Various Rickettsia species are transmitted by ticks in Florida, with Rocky Mountain spotted fever being the most serious. Symptoms include:

• High fever and severe headache
• Characteristic rash (often starting on wrists and ankles)
• Muscle and joint pain
• Nausea and vomiting
• Confusion and neurological symptoms in severe cases

Rickettsial infections can be life-threatening if not treated promptly. Early diagnosis and treatment with appropriate antibiotics are critical.

Mycoplasma and Chlamydia Pneumoniae

While not always tick-transmitted, these intracellular bacteria often complicate Lyme disease and may contribute to chronic symptoms. They can cause:

• Respiratory symptoms
• Chronic fatigue
• Joint pain and inflammation
• Neurological symptoms

Testing and treatment for these organisms may be incorporated into comprehensive Lyme disease care when clinical suspicion is high.

The Importance of Comprehensive Testing

Given the frequency of co-infections in Lyme disease patients, Dr. Blissenbach typically screens for multiple tick-borne pathogens during initial evaluation. This comprehensive approach ensures that all active infections are identified and addressed in the treatment plan.

Testing panels may include:

• Lyme disease (Borrelia burgdorferi) testing
• Babesia antibody testing and PCR
• Bartonella antibody testing and PCR
• Ehrlichia and Anaplasma testing
• Rickettsia antibody panels
• Mycoplasma and Chlamydia pneumoniae testing when indicated

Not all patients require every test, but a thoughtful screening approach based on symptoms and clinical presentation helps identify relevant co-infections that require treatment.

Treatment Strategies for Multiple Co-infections

When multiple co-infections are present, treatment becomes more complex. Dr. Blissenbach develops individualized treatment protocols that address each patient’s specific infection profile while managing the overall disease burden.

Treatment considerations include:

• Medication selection: Choosing antibiotics that address multiple infections when possible, while adding targeted therapy for specific organisms
• Treatment sequencing: Sometimes treating infections in a particular order produces better outcomes than simultaneous treatment
• Herxheimer management: Co-infections can produce intense Herxheimer reactions requiring careful pacing and detoxification support
• Duration considerations: Multiple infections often require extended treatment compared to Lyme disease alone
• Immune support: Addressing immune function is crucial when multiple pathogens are present

Why Co-infections Matter for Treatment Outcomes

Failure to identify and treat co-infections is a common reason for treatment failure in Lyme disease patients. Patients may initially improve on Lyme-specific antibiotics but then plateau or relapse because untreated co-infections continue to cause symptoms.

Additionally, some co-infections can suppress immune function, making it harder for the body to clear Lyme disease bacteria. Treating these co-infections can enhance the effectiveness of Lyme disease treatment.

Recognizing and addressing the full spectrum of tick-borne infections is essential for achieving optimal treatment outcomes and complete recovery.

Prevention and Protection in Florida

While Florida is not traditionally considered a high-risk Lyme disease state, tick-borne illnesses are increasingly recognized throughout the state. Several tick species capable of transmitting disease are present in Florida:

• Lone star ticks (Amblyomma americanum)
• Black-legged ticks (Ixodes scapularis)
• American dog ticks (Dermacentor variabilis)
• Gulf Coast ticks (Amblyomma maculatum)

Florida residents should take tick prevention seriously:

• Use EPA-approved insect repellents when in wooded or grassy areas
• Wear long sleeves and pants tucked into socks when hiking
• Perform thorough tick checks after outdoor activities
• Promptly remove any attached ticks using fine-tipped tweezers
• Consider tick prevention for pets to reduce household exposure
• Create tick-safe zones in your yard through landscaping modifications

Expertise You Can Trust

Managing tick-borne co-infections requires specialized knowledge and experience. As a Board-Certified Lyme Literate Medical Doctor, Dr. Blissenbach stays current with the latest research on tick-borne diseases and maintains expertise in diagnosing and treating the full spectrum of these infections.

Her comprehensive approach ensures that patients receive thorough evaluation, accurate diagnosis, and effective treatment for all infections contributing to their illness. This attention to the complete clinical picture, rather than focusing solely on Lyme disease, often makes the difference between partial improvement and complete recovery.

Schedule Your Comprehensive Evaluation

If you’ve been diagnosed with Lyme disease but continue to struggle with symptoms, or if you suspect you may have tick-borne infections, comprehensive evaluation for co-infections may be the key to your recovery.

Contact Northeast Florida Internal Medicine at 904-387-4050 to schedule a consultation with Dr. Blissenbach. Located at 2065 Herschel Street in Jacksonville, the practice welcomes patients from throughout Florida and the Southeast, with telemedicine options available for residents of Florida, Georgia, South Carolina, Alabama, Virginia, and North Carolina.

Don’t let undiagnosed co-infections prevent you from achieving complete recovery. Dr. Blissenbach’s expertise in tick-borne illness provides patients with the comprehensive care needed to address the full complexity of these challenging infections.