Can Lyme Disease Cause Stomach Pain and GI Symptoms in Children?
Children with Lyme disease may develop stomach pain or digestive symptoms
GI symptoms may reflect autonomic dysfunction or neurologic involvement
Abdominal pain alone rarely means Lyme disease
Lyme disease can cause gastrointestinal symptoms in children, particularly when the infection affects the nervous system or contributes to dysautonomia.
Although abdominal pain is not the most recognized sign of Lyme disease, some children develop nausea, appetite changes, abdominal discomfort, bloating, constipation, diarrhea, or unexplained stomach pain during the course of illness.
Most abdominal pain in children is not caused by Lyme disease. Common gastrointestinal conditions should always be considered first. But in children living in tick-endemic areas — especially those with neurologic, autonomic, cognitive, or multisystem symptoms — Lyme disease may enter the differential diagnosis.
This broader pattern often contributes to delayed diagnosis, particularly when gastrointestinal complaints overshadow neurologic or systemic symptoms.
How Lyme Disease Can Affect the Gut
Lyme disease is usually thought of as causing rash, joint pain, facial palsy, or fatigue. But the infection can also affect the nervous system.
When that happens, gastrointestinal symptoms may occur indirectly through autonomic nervous system dysfunction or, more rarely, through radicular nerve involvement.
The autonomic nervous system helps regulate digestion, including gastric emptying, intestinal movement, bowel function, and appetite. When Lyme disease contributes to dysautonomia, children may develop symptoms that seem gastrointestinal even when routine GI testing is unrevealing.
These symptoms may overlap with broader patterns seen in gut symptoms in Lyme disease.
Gastrointestinal Symptoms Reported in Lyme Disease
Children and adolescents with Lyme disease may report:
- Abdominal discomfort or cramping
- Nausea
- Reduced appetite
- Early fullness after meals
- Bloating
- Constipation or diarrhea
- Weight change related to poor intake or dysregulation
These symptoms are not specific to Lyme disease. However, they can appear as part of a broader symptom pattern that includes fatigue, dizziness, brain fog, palpitations, temperature intolerance, or sensory sensitivity.
Why Lyme Disease Can Cause Stomach Issues
In my clinical practice, gastrointestinal symptoms are not unusual in patients with Lyme disease who also have dysautonomia.
Children and adults may describe stomach pain, nausea, irregular bowel habits, appetite changes, or feeling unwell after meals without a clear primary gastrointestinal explanation.
In these cases, symptoms may reflect impaired autonomic regulation rather than structural gastrointestinal disease.
In my experience, gastrointestinal symptoms are often among the earlier symptoms to improve during treatment. Families sometimes notice stomach-related symptoms settle before fatigue, cognitive symptoms, or neurologic complaints have fully resolved.
Can Lyme Disease Cause Stomach Pain?
Yes — although uncommon, abdominal pain may occasionally be an early sign of neurologic Lyme disease.
A case report published in the Italian Journal of Pediatrics described a 9-year-old boy whose first major symptom of Lyme neuroborreliosis was severe abdominal pain. Routine gastrointestinal testing was unrevealing.
Over time, he developed attention difficulties, irritability, speech difficulty, and ataxic gait. Further neurologic workup eventually confirmed Lyme neuroborreliosis, and he improved after treatment.
This case is important because abdominal pain may rarely reflect radicular nerve involvement rather than primary gastrointestinal disease.
Can Lyme Disease Cause Diarrhea or Constipation?
Some children with Lyme disease describe constipation, diarrhea, irregular bowel habits, or fluctuating GI symptoms.
These symptoms appear more likely when autonomic dysfunction disrupts gut regulation rather than from direct intestinal infection.
Because constipation and diarrhea are common pediatric complaints, Lyme disease should not be assumed without a broader clinical context.
Rare Does Not Mean Irrelevant
The pediatric abdominal pain case should not be overinterpreted. Most children with stomach pain do not have Lyme disease, and most children with Lyme disease do not present with isolated abdominal pain.
Still, Lyme disease can occasionally present in unexpected ways. Pediatricians and parents may need to think more broadly when abdominal pain remains unexplained and is accompanied by neurologic, autonomic, cognitive, or behavioral changes.
When to Think More Broadly
Lyme disease may deserve consideration when gastrointestinal symptoms occur alongside:
- Fatigue or reduced stamina
- Dizziness or orthostatic symptoms
- Brain fog or school decline
- Headaches or facial palsy
- Gait change, imbalance, or neurologic findings
- Tick exposure or residence in an endemic area
- A fluctuating multisystem illness without a unifying diagnosis
These patterns are especially important in the broader setting of pediatric Lyme disease, where symptoms may be subtle, variable, or initially misattributed.
Why GI Symptoms Are Sometimes Missed
Because gastrointestinal symptoms are common in childhood, they are often attributed to viral illness, stress, food intolerance, constipation, reflux, or functional abdominal pain.
Those explanations are often correct. But when symptoms persist, shift, or occur alongside neurologic or autonomic complaints, a broader review of systems becomes important.
This is particularly true when routine testing is normal but the child is clearly not functioning well.
Frequently Asked Questions
Can Lyme disease cause stomach pain?
Yes. Stomach pain can occur in Lyme disease, although isolated abdominal pain is uncommon and usually requires broader evaluation.
Can Lyme disease cause diarrhea?
Some children report diarrhea during Lyme disease, particularly when autonomic dysfunction affects gut regulation.
Can Lyme disease cause constipation?
Constipation may occur in some children when autonomic nervous system dysfunction slows bowel movement.
Are gastrointestinal symptoms common in pediatric Lyme disease?
GI symptoms are less common than fatigue, headaches, or joint symptoms but may occur in multisystem illness.
When should abdominal pain raise concern for Lyme disease?
Persistent abdominal pain combined with fatigue, neurologic symptoms, dizziness, cognitive changes, or tick exposure may warrant broader consideration.
Clinical Takeaway
Gastrointestinal symptoms in children are common and usually have explanations other than Lyme disease.
However, stomach pain, nausea, constipation, diarrhea, or appetite changes that occur alongside neurologic symptoms, dysautonomia, fatigue, or multisystem illness may justify broader evaluation.
Related Articles
These articles explore overlapping pediatric, neurologic, and gastrointestinal presentations.
Delayed Lyme disease diagnosis
Brain fog in Lyme disease
Lyme disease symptoms guide
Recovery from Lyme disease
Persistent Lyme disease overview
References
- Savasta S, Fiorito I, Foiadelli T, Pichiecchio A, Cambieri P, Mariani B, Marone P, Marseglia G. Abdominal pain as first manifestation of Lyme neuroborreliosis in children, case report and review of literature. Italian Journal of Pediatrics. 2020;46:172.
- Skogman B, Croner S, Nordwall M, Eknefelt M, Ernerudh J, Forsberg P. Lyme neuroborreliosis in children: a prospective study of clinical features, prognosis, and outcome. Pediatr Infect Dis J. 2008;27(12):1089-1094.
- Øymar K, Tveitnes D. Clinical characteristics of childhood Lyme neuroborreliosis in an endemic area of northern Europe. Scand J Infect Dis. 2009;41(2):88-94.
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
