Many children experience occasional stomach aches, but for some, abdominal pain or nausea becomes frequent and interferes with school, activities, and daily life. These symptoms may be part of functional abdominal pain disorders, a group of conditions in which the communication between the gut and brain becomes dysregulated.
Auricular neurostimulation is a noninvasive, drug-free treatment option that works by stimulating nerves in the ear that connect to regions of the brain involved in pain regulation, inflammation, and autonomic function. By gently modulating these nerve pathways, this therapy may help restore balance in gut–brain communication and reduce symptoms.
Below are answers to common questions families often ask about this treatment approach.
What is auricular neurostimulation?
Auricular neurostimulation is a form of neuromodulation that uses small, gentle, electrical signals to influence nerve activity and communication between the gut and the brain.
The outer ear contains branches of several nerves, including the auricular branch of the vagus nerve and trigeminal nerve, which connect to brain regions involved in processing visceral pain and nausea. Stimulating these nerves can influence signaling within the gut–brain axis, which plays an important role in disorders of gut–brain interaction.
There are several approaches within auricular neuromodulation, including:
- Percutaneous electrical nerve field stimulation (PENFS), which uses small electrodes placed in the ear
- Transcutaneous auricular nerve stimulation (taVNS), which uses electrodes placed on the skins surface
- Auricular acupuncture and related auriculotherapy approaches
These techniques share the goal of influencing neural pathways involved in pain regulation and autonomic function.
How does auricular neurostimulation compare with other neuromodulation therapies?
Auricular neurostimulation is similar to other therapies that influence nerve signaling, including vagus nerve stimulation.
Unlike implanted vagus nerve stimulation devices used for certain neurologic conditions, auricular neurostimulation is temporary and does not require surgery. Some forms stimulate nerves through the skin of the ear, while others use small external electrodes placed in the outer ear.
How does the treatment work?
Different forms of auricular neurostimulation use different methods to stimulate nerves in the outer ear.
Auricular percutaneous electrical nerve field stimulation (PENFS)
One approach currently used in pediatric gastroenterology is auricular percutaneous electrical nerve field stimulation (PENFS) which delivers gentle, low-level electrical pulses through small electrodes placed on the ear. These pulses stimulate branches of several cranial nerves, including the vagus and trigeminal nerves. These nerves connect to region in the brain that are involved in pain regulation, inflammation and autonomic function. One example of PENFS therapy is the IB-Stim device, which is currently FDA-cleared in the United States for adolescents with functional abdominal pain disorders, including conditions such as irritable bowel syndrome (IBS) and functional dyspepsia.
The device is small and battery powered and is placed on the outer ear by a healthcare professional. Treatment typically involves wearing the device for five days at a time, followed by a short break, and repeating this cycle over several weeks.
Auricular acupuncture and related auriculotherapy: These approaches are sometimes discussed alongside auricular neurostimulation because both involve stimulation of the ear. However, they are based on different treatment frameworks and techniques.
What conditions may this therapy help treat?
Auricular neurostimulation is currently used primarily for functional abdominal pain disorders in children and adolescents, including conditions within the group known as functional GI disorders.
Examples include:
- Functional abdominal pain
- Irritable bowel syndrome (IBS)
- Functional dyspepsia
- Cyclic vomiting syndrome
Research in neurogastroenterology continues to explore whether this type of neuromodulation may benefit other conditions related to gut–brain signaling such as chronic nausea and vomiting.
What will my child feel during treatment?
When the device is first placed, some children notice a mild pulsing or tingling sensation in the ear. This feeling usually becomes less noticeable as they adjust to the therapy.
Most children are able to continue normal daily activities, including school and social activities, while wearing the device.
Are there side effects?
Auricular neurostimulation is generally well tolerated. The most commonly reported side effect is mild skin irritation at the site of device attachment, which typically resolves after removal. Some patients may also experience a pulsing or tingling sensation at the stimulation site, as well as localized allodynia. A small subset of patients may report headaches, particularly those with a history of migraines. Registry data have additionally described uncommon side effects, including nausea, dizziness, sleep disturbance, and transient ear discomfort. Overall, these adverse effects are typically mild and self-limited.
Because the therapy is noninvasive and medication-free, systemic side effects are uncommon.
Key Takeaways for Families
- Auricular neurostimulation is a noninvasive therapy that stimulates nerves in the ear to influence gut–brain signaling.
- It is used to help manage functional abdominal pain disorders in children and adolescents.
- The therapy works by delivering gentle electrical pulses to nerves connected to brain regions involved in pain and autonomic regulation.
- IB-Stim is currently the FDA-cleared device in the United States used for this treatment in pediatric patients.
- The treatment is generally well tolerated, with mild skin irritation being the most common side effect.
Families interested in learning whether this therapy might be appropriate for their child should speak with their child’s healthcare provider.
Adapted from IFFGD Publication #848 By: Mohamad Abi Nassif, MD, Division of Gastroenterology Hepatology and Nutrition; Neha R Santucci, Associate Professor, Pediatric Gastroenterology Hepatology and Nutrition;
Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH. Edited By Jose M Garza MD, Medical director, Neurogastroenterology and Motility, Children’s Healthcare of Atlanta. Partner at Gi Care for Kids, Atlanta, GA.