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Lyme disease

An atlas of blacklegged-tick Borrelia infection, erythema migrans, neurologic, cardiac and joint disease, staged testing, and antibiotics.

Lyme disease · Lyme borreliosis

MONDO:0019632Public QA completeSource-bound · 4

Disease at a glance

Start with the essentials, then explore the patient and research views.

Public revision · effa07d01b09

Disease class
Lyme disease is a Borrelia bacterial infection.
Core mechanism
It is transmitted by infected blacklegged tick bites.
Genes or cause
An expanding erythema migrans rash can be an early finding.
Typical features
Fever, headache, fatigue, and musculoskeletal pain can occur.
Variability
Untreated infection can affect nerves, heart, and joints.
Diagnosis
Symptoms, exposure probability, and alternative diagnoses are assessed together.
Management
When indicated, FDA-cleared two-step antibody testing is used.
Treatment and research
Antibody testing can be falsely negative early.
Reading evidence
Antibody positivity can persist long after treatment.
Key caution
Recommended antibiotics are selected for the clinical manifestation.

For patients and families

A structured guide for understanding the disease and preparing for clinical conversations.

At a glance

Lyme disease is a Borrelia bacterial infection.

Fever, headache, fatigue, and musculoskeletal pain can occur.

How the disease works

It is transmitted by infected blacklegged tick bites.

An expanding erythema migrans rash can be an early finding.

Why experiences vary

Untreated infection can affect nerves, heart, and joints.

Diagnosis and management

Symptoms, exposure probability, and alternative diagnoses are assessed together.

Treatment status

When indicated, FDA-cleared two-step antibody testing is used.

Antibody testing can be falsely negative early.

Reading clinical trials

Tick avoidance and prompt removal are important prevention measures.

Topics for a clinical visit

Rash, exposure date, neurologic, cardiac, and joint findings require review.

Medical notice

This material is for disease education and is not a personal diagnosis or treatment instruction.

Evidence and sources

A trial registry status does not establish efficacy or regulatory approval.