Management of Lyme Disease

Clinical Presentation and Diagnosis

Arthritis with documented joint effusion and edema is a sign of therapeutic failure or active disease, according to the Infectious Diseases Society of America 1
Meningitis with abnormalities in cerebrospinal fluid is a sign of therapeutic failure or active disease, according to the Infectious Diseases Society of America 1
Neuropathy with objective neurological findings is a sign of therapeutic failure or active disease, according to the Infectious Diseases Society of America 1
Carditis with documented conduction abnormalities (PR interval >300 ms, other arrhythmias) is a sign of therapeutic failure or active disease, according to the Infectious Diseases Society of America 1, 2
Development of new erythema migrans lesions suggests reinfection, not therapeutic failure, according to the Infectious Diseases Society of America 3

An electrocardiogram should be performed if the patient experiences dizziness, syncope, palpitations, dyspnea, chest pain, or edema, as recommended by the American Heart Association 2
Joints should be examined for edema and objective joint effusion, as recommended by the American College of Rheumatology 1
Patients should be evaluated for seventh cranial nerve palsy or other objective neurological deficits, as recommended by the American Academy of Neurology 1
If there are no objective manifestations of active disease, no additional antibiotics should be prescribed, as the failure rate with appropriate initial treatment is approximately 1%, and approximately 99% of patients treated appropriately achieve cure, according to the Infectious Diseases Society of America 1
For partial response to initial treatment, a second course of 28 days of oral antibiotics (doxycycline 100 mg twice daily, amoxicillin 500 mg three times daily, or cefuroxime axetil 500 mg twice daily) should be considered, as recommended by the Infectious Diseases Society of America 1, 3
For no or minimal response, intravenous ceftriaxone 2 g daily for 2-4 weeks should be administered, as recommended by the Infectious Diseases Society of America 1, 4

If neurological or cardiac manifestations develop during or after treatment, immediate evaluation and possible parenteral therapy with ceftriaxone 2 g daily are required, as recommended by the American Heart Association and the American Academy of Neurology 2, 4
Coinfections with Babesia microti or Anaplasma phagocytophilum should be considered in patients with persistent symptoms despite appropriate therapy, especially if there is persistent fever or hematological abnormalities, as recommended by the Infectious Diseases Society of America 3

The American College of Rheumatology recommends that routine serologic retesting after treatment of Lyme disease is not indicated and should not be performed, as antibodies persist for months to years after successful treatment and do not indicate active infection or treatment failure 5

New seventh nerve palsy developing during the first week of therapy is typically benign and does not mandate treatment change in an otherwise stable patient, according to the Infectious Diseases Society of America 6
New cardiac symptoms (syncope, palpitations, dyspnea, chest pain) require ECG evaluation for conduction abnormalities (PR >300ms or other arrhythmias), as recommended by the American College of Rheumatology 5

35% of patients have subjective symptoms at day 20 post-treatment, 24% at 3 months, and 17% at 12 months, which represent slow resolution of inflammation, not persistent infection, according to the Infectious Diseases Society of America 6, 7

The American College of Rheumatology recommends that only objective findings such as arthritis, neurologic deficits, or cardiac conduction abnormalities indicate potential treatment failure or reinfection 5
Patients with persistent nonspecific symptoms (fatigue, pain, cognitive complaints) but lacking objective evidence should not receive additional antibiotic therapy (strong recommendation, moderate-quality evidence), as stated by the American College of Rheumatology 5

For Lyme arthritis with partial response (mild residual joint swelling), the American College of Rheumatology recommends considering a second 28-day course of oral antibiotics (doxycycline 100mg twice daily, amoxicillin 500mg three times daily, or cefuroxime axetil 500mg twice daily) 5
For no or minimal response to initial treatment, the American College of Rheumatology recommends administering IV ceftriaxone 2g daily for 2-4 weeks 5

The American College of Rheumatology states that if a patient meets criteria for post-Lyme disease syndrome (persistent subjective symptoms for ≥6 months after treatment without objective findings), additional antibiotics are contraindicated 5, 8, 9, 10