Lyme Disease Mistaken for Child Abuse

Lyme disease mistaken for child abuse is rare but possible when symptoms are misunderstood. In young children who cannot describe their symptoms clearly, infections such as Lyme disease may occasionally resemble traumatic injury.

Some medical cases stay with us long after we read them. One such case—published by Pan and colleagues in 2021—still stands out for how quickly Lyme disease mistaken for child abuse led to an unexpected medical and legal investigation.

This case also reflects a broader pattern described in Lyme disease misdiagnosis, where multisystem illness evolves outside typical diagnostic frameworks.

The case involved a toddler brought to the hospital with a swollen knee, a fractured arm, and a dark mark on his buttock that resembled a bruise. No adult had witnessed the injury. There was no clear explanation for the findings. Following standard procedure, clinicians reported suspected abuse, and the child was placed in protective custody.

At that moment, the story seemed tragically straightforward: unexplained injuries, concerning physical findings, and a need to protect a vulnerable child. But the truth was far more complex.

How Lyme Disease Can Be Mistaken for Child Abuse

As the medical team assessed the child, one clinician noticed something unusual about the so-called bruise. It did not behave like a typical traumatic lesion. Its edges formed a faint ring. The center appeared slightly lighter. Over time, the mark seemed to expand outward instead of fading.

These were not the characteristics of a bruise. They were the characteristics of erythema migrans, the hallmark rash of Lyme disease.

Serologic testing was ordered. The Lyme test was positive.

The child was started on amoxicillin, and the response was swift. The knee swelling eased. His comfort improved. The rash began to resolve. Within five days, he was reunited with his family.

This case highlights how easily an infection can be mistaken for inflicted injury in children who cannot explain what they feel.

Why This Case Was Easy to Misinterpret

Toddlers rarely provide a clear medical history. They cannot describe the onset of pain, whether a tick was present, or whether a rash is new or expanding. Their symptoms are often nonspecific: irritability, reduced limb use, fatigue, or refusal to walk.

Lyme disease also has a tendency to appear in areas caregivers rarely see. The buttocks, groin, and diaper region are common sites for erythema migrans in young children, and rashes in these areas may be misidentified.

Young children may also present differently than adults. For a broader discussion, see Pediatric Lyme Disease.

A Necessary Balance: Protecting Children and Recognizing Illness

Any suspicion of child abuse must always be taken seriously and reported immediately. This process saves lives. At the same time, thorough medical evaluation is essential when physical findings do not follow typical patterns of trauma.

This case reminds clinicians that the boundary between medical illness and suspected maltreatment can sometimes be difficult to interpret. Careful clinical reassessment can clarify complex situations.

Clinical Takeaway

Lyme disease may occasionally mimic findings that raise concern for non-accidental trauma. Careful examination of rashes, consideration of tick exposure, and structured diagnostic reassessment can help distinguish infection from injury.

Awareness of atypical presentations helps protect both children and families.

Source

Pan T, Nasreddine A, Trivellas M, Hennrikus WL. Lyme Disease Misinterpreted as Child Abuse. Case Rep Orthop. 2021;2021:6665935.

Related Resources

1. Case Rep Orthop. A Multispecialty Approach to the Identification and Diagnosis of Nonaccidental Trauma in Children
2. CDC. Recognizing medical child abuse in children presenting with chronic pain
3. Dr. Daniel Cameron: Lyme disease symptoms in toddler attributed to child abuse
4. Dr. Daniel Cameron: Study finds misdiagnosis and delayed diagnosis common for Lyme disease patients