ACNES can cause focal abdominal wall pain when small sensory nerves become irritated or entrapped as they pass through the abdominal wall.
This video explains how ACNES may cause localized abdominal wall pain, nerve sensitivity, movement-related pain, and pelvic overlap.
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If you’ve had abdominal pain for months or years and every test keeps coming back normal… it could actually be a trapped nerve. One condition that’s often overlooked is called Abdominal Cutaneous Nerve Entrapment Syndrome, or ACNES.
ACNES happens when small nerves in the abdominal wall become irritated or trapped as they pass through the muscles and connective tissues of the abdomen. Patients often describe the pain as sharp, burning, stabbing, or very localized, and many notice it gets worse with movement, twisting, sitting up, coughing, or even light touch.
Because the pain is felt in the abdomen, many people go through extensive gastrointestinal testing first, and are often told everything looks normal, even though the pain is very real. One important clue is that the pain is usually very specific to one spot and may become worse when the abdominal muscles tighten.
My approach is to carefully evaluate the abdominal wall, surrounding muscles, nerves, pelvis, and movement patterns to understand whether a nerve entrapment may be contributing to symptoms. Treatment may include targeted physical therapy, medications, nerve-focused treatments, or ultrasound-guided injections to calm the irritated nerve and reduce pain.
The most important thing is recognizing that not all abdominal pain comes from internal organs. Sometimes the abdominal wall and nerves themselves are the source. If you’ve been dealing with persistent abdominal pain and haven’t gotten answers, it may be worth exploring whether ACNES could be part of the picture.
Abdominal Cutaneous Nerve Entrapment Syndrome, or ACNES, is a condition in which small sensory nerves in the abdominal wall become irritated or entrapped, causing localized abdominal wall pain. The pain may feel sharp, burning, stabbing, or tender, and it often worsens with pressure, twisting, coughing, movement, or tensing the abdominal muscles.
ACNES is often missed because it can resemble stomach pain, pelvic pain, hernia pain, surgical pain, or other abdominal conditions. Careful evaluation is important to determine whether pain is coming from the abdominal wall, a nerve, muscle trigger point, scar tissue, hernia, pelvis, hip mechanics, or an internal organ.
At Manhattan Pain Medicine, evaluation begins by identifying whether focal abdominal pain is coming from an entrapped nerve, muscle trigger point, scar sensitivity, hernia-related pain, pelvic structures, hip mechanics, or a visceral source. For patients looking for ACNES treatment in Manhattan,
MPM uses a diagnosis-first approach that may include focused physical examination, assessment for Carnett sign, diagnostic ultrasound when appropriate, and carefully selected diagnostic or therapeutic injections.
Treatment may include education, activity modification, acupuncture, Feldenkrais, trigger-point injections, local anesthetic injections, and selected botulinum toxin use when clinically appropriate.
ACNES is often overlooked because abdominal wall nerve pain can look like many other conditions. Patients may have normal GI testing, imaging, pelvic evaluation, or hernia workup, yet still have a small, reproducible area of pain. The pain may worsen when they sit up, twist, cough, bend, exercise, wear tight clothing, or press on the area.
A diagnosis-first evaluation helps avoid two common problems: assuming all abdominal pain is internal organ pain, or assuming all persistent abdominal pain is ACNES. The painful area may come from an abdominal wall nerve, muscle trigger point, scar tissue, hernia, pelvic floor dysfunction, hip impingement, sports hernia, or another overlapping pain pattern. MPM evaluates these possibilities carefully before recommending injections or other treatments.
ACNES fits within MPM’s Hypermobility and Pelvic Pain Zones of Expertise because abdominal wall pain rarely exists in isolation. Patients may have tissue sensitivity, abdominal wall strain, scar sensitivity, pelvic floor dysfunction, hip impingement, hernia-like pain, sports hernia symptoms, or movement patterns that increase stress across the abdominal wall.
MPM uses the Zones of Expertise framework to evaluate whether symptoms appear nerve-related, muscular, scar-related, hernia-related, pelvic, hip-related, hypermobility-related, or visceral. This matters because the treatment pathway for ACNES may differ from the treatment pathway for pelvic pain, hip impingement, abdominal muscle pain, or hernia pain. The goal is to clarify the source and coordinate care when more than one system may be involved.
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ACNES stands for Abdominal Cutaneous Nerve Entrapment Syndrome. It is a condition in which small sensory nerves in the abdominal wall become irritated or entrapped as they pass through the abdominal muscles and fascia. This can cause focal abdominal wall pain that may be sharp, burning, stabbing, or tender. ACNES is not the same as stomach pain from an internal organ, although it can feel like abdominal or stomach pain to the patient. Because other conditions can look similar, diagnosis requires careful evaluation.
ACNES often causes localized abdominal wall pain in a small, specific area. The pain may feel sharp, burning, stabbing, aching, or tender to pressure. It may worsen with movement, twisting, coughing, bending, sitting up, exercise, tight clothing, or tensing the abdominal muscles. Some patients can point to the painful spot with one finger. Others notice sensitivity around a scar or after prior abdominal surgery. Because symptoms can resemble hernia pain, pelvic pain, GI pain, or muscle strain, the pattern should be evaluated carefully.
ACNES is often missed because routine abdominal testing may focus on internal organs, while the pain source is in the abdominal wall. Patients may have normal GI tests, imaging, pelvic evaluation, or hernia workup and still have real, focal pain. ACNES can also resemble muscle strain, scar pain, hernia pain, pelvic pain, sports hernia, or nerve irritation from another source. A focused physical examination is important because abdominal wall nerve pain may be identified through tenderness mapping, movement testing, Carnett sign, and response to diagnostic injection when appropriate.
Carnett sign is a physical examination finding used to help distinguish abdominal wall pain from deeper internal abdominal pain. During the exam, the clinician identifies a tender spot and then asks the patient to tense the abdominal muscles, often by lifting the head or legs. If pain stays the same or worsens when the muscles are tensed, it may suggest the abdominal wall is contributing. Carnett sign can support suspicion for ACNES or abdominal wall pain, but it is not a complete diagnosis by itself. Other causes still need to be considered.
ACNES diagnosis is based on history, focused physical examination, symptom pattern, exclusion of urgent or visceral causes, and sometimes response to a diagnostic injection. Clinicians may look for focal abdominal wall tenderness, pain that worsens with abdominal muscle tension, and symptoms that do not fit an internal organ pattern. Diagnostic ultrasound may be used when appropriate to evaluate soft tissue structures, guide an injection, or assess for other abdominal wall concerns. A local anesthetic injection may help confirm whether an abdominal wall nerve is contributing to pain.
Treatment depends on the diagnosis, anatomy, pain pattern, prior workup, and patient goals. Options may include education, activity modification, movement-based therapy, acupuncture, Feldenkrais, trigger-point injections, local anesthetic injections, and selected botulinum toxin injections when appropriate. Local anesthetic injection, sometimes with corticosteroid, may be used as both a diagnostic and therapeutic step in selected patients. If symptoms persist despite appropriate conservative and interventional care, referral for surgical options may be considered in selected refractory cases. Treatment should be individualized, and relief is not guaranteed.
Yes. ACNES or abdominal wall nerve irritation can occur after abdominal surgery, especially when scar tissue, incision sites, or altered tissue mechanics irritate small sensory nerves. Patients may notice focal pain near a scar, pain with pressure, or pain that worsens when the abdominal wall is activated. However, post-surgical abdominal pain can also come from hernia, adhesions, infection, pelvic conditions, internal organ issues, or other causes. A careful evaluation is needed before assuming that the pain is nerve entrapment.
Abdominal pain should be evaluated urgently or in an emergency setting when it is severe, rapidly worsening, or associated with fever, repeated vomiting, vomiting blood, blood in stool, black stool, fainting, chest pain, shortness of breath, rigid abdomen, significant abdominal swelling, pregnancy-related pain, new neurologic symptoms, incarcerated hernia symptoms, or pain after major injury. ACNES should be considered only after urgent, visceral, pelvic, hernia-related, infectious, vascular, oncologic, or surgical causes have been appropriately evaluated.
Before care begins, our team helps patients understand the practical side of treatment, including insurance verification, out-of-network benefits, cost-share estimates, self-pay options, and billing questions. We believe patients should have as much clarity as possible before moving forward.
Abdominal Cutaneous Nerve Entrapment Syndrome, often called ACNES, is a specific cause of chronic abdominal wall pain. It occurs when small sensory nerves that supply the skin and abdominal wall become irritated or trapped as they pass through the abdominal muscles and fascia. When this happens, pain can feel sharp, burning, stabbing, or highly localized.
For many patients, ACNES is frustrating because the pain feels like it is coming from inside the abdomen, yet GI testing, imaging, pelvic evaluation, or hernia workup may not provide a clear explanation. This does not mean the pain is imagined. Abdominal wall nerves can produce real pain, especially when irritated by pressure, movement, muscle tension, scar tissue, or mechanical strain.
ACNES usually causes pain in a small, specific area of the abdominal wall. A patient may be able to point to the painful spot with one finger. The area may be tender to touch, sensitive to clothing, or painful when pressed. Pain may worsen with twisting, bending, coughing, sitting up, standing for long periods, exercise, or tensing the abdominal muscles. Some patients describe burning, stabbing, pulling, electric, or sharp pain.
Symptoms may be constant or intermittent. Some patients notice pain after abdominal surgery or near a scar. Others develop symptoms without a clear trigger. ACNES can occur near the rectus abdominis muscle, along the abdominal wall, or in areas where small nerves pass through tight fascial openings.
ACNES can resemble several abdominal and pelvic conditions. It may be mistaken for stomach pain, chronic abdominal pain, pelvic pain, hernia pain, sports hernia, muscle strain, hip-related pain, or scar tissue pain. Patients may undergo GI evaluation, pelvic evaluation, imaging, or surgical assessment before the abdominal wall is considered as the pain source.
The distinction matters. Internal organ pain, hernia complications, pelvic pathology, infection, cancer-related pain, and vascular conditions require different evaluation and treatment. ACNES should be considered only after appropriate screening for urgent or visceral causes. MPM’s approach is to evaluate abdominal wall nerve pain without overlooking conditions that require GI, surgical, pelvic, oncologic, or emergency care.
A hernia may cause a bulge, pressure, or pain that worsens with straining, lifting, or coughing. Pelvic pain may overlap with lower abdominal pain, hip mechanics, pelvic floor dysfunction, and nerve sensitivity. GI pain may relate to eating, bowel movements, nausea, bloating, constipation, or other digestive symptoms. ACNES tends to be more focal and may worsen when the abdominal wall is activated.
These patterns are helpful but not absolute. A patient can have more than one contributor. For example, someone may have pelvic pain and abdominal wall nerve sensitivity. Another patient may have a small hernia and muscle trigger points. Another may have hip impingement that changes abdominal wall loading. This is why diagnosis-first care matters.
Evaluation begins with a detailed history and focused physical examination. MPM reviews pain location, timing, triggers, prior surgeries, scar sensitivity, GI symptoms, pelvic symptoms, hernia evaluations, imaging, and previous treatments. The physical exam may include palpation of the painful area, abdominal wall activation, movement testing, and assessment for Carnett sign.
Carnett sign can be helpful when abdominal wall pain is suspected. If the pain stays the same or worsens when the abdominal muscles are tensed, the abdominal wall may be contributing. However, a positive Carnett sign alone is not a complete diagnosis. It must be interpreted with the full clinical picture.
Diagnostic ultrasound may be used when clinically appropriate to evaluate soft tissue anatomy, assess for abdominal wall concerns, or guide injections. Diagnostic injections with local anesthetic may help determine whether a specific nerve or abdominal wall site is contributing to pain. The response to injection can provide useful information, but it must be considered alongside history and exam findings.
Treatment is stepwise and individualized. Education and activity modification may help patients understand which movements or positions aggravate symptoms. Movement-based therapy, including Feldenkrais, may help address guarding, breath mechanics, posture, and abdominal wall loading. Acupuncture may be considered as part of a broader pain management plan for selected patients.
Trigger-point injections or local anesthetic injections may be considered when focal abdominal wall pain is suspected. In some cases, local anesthetic with or without corticosteroid can serve both a diagnostic and therapeutic role. Botulinum toxin injections may be considered selectively, especially when muscle overactivity, guarding, or refractory abdominal wall pain contributes to symptoms. These treatments require careful patient selection and clinician supervision.
When injections do not help, the next step depends on the diagnosis. MPM may reconsider whether the pain source is truly ACNES, whether another abdominal wall structure is involved, whether pelvic or hip mechanics are contributing, or whether a hernia, scar neuroma, nerve pathway, or visceral condition needs further evaluation. In selected refractory cases, surgical consultation may be considered.
Some patients with ACNES-like pain also have hypermobility, pelvic pain, hip impingement, sports hernia symptoms, or abdominal wall strain. Hypermobility may affect tissue loading and muscle guarding. Pelvic floor dysfunction may refer pain into the lower abdomen. Hip mechanics may change how the pelvis and abdominal wall share load. These overlapping patterns can make abdominal wall pain more persistent.
MPM evaluates these connections through its Hypermobility and Pelvic Pain Zones of Expertise. The goal is to understand how the abdominal wall, pelvis, hip, nerves, and movement patterns may interact. This can help patients avoid fragmented care and guide a more coordinated treatment plan.
Some abdominal pain should not wait for an outpatient pain evaluation. Patients should seek urgent or emergency care for severe or rapidly worsening pain, fever, repeated vomiting, vomiting blood, blood in stool, black stool, fainting, chest pain, shortness of breath, rigid abdomen, significant abdominal swelling, pregnancy-related pain, new neurologic symptoms, incarcerated hernia symptoms, or pain after major injury.
MPM approaches ACNES through a diagnosis-first, coordinated model. The evaluation considers abdominal wall nerves, muscles, fascia, scar tissue, hernias, pelvic structures, hip mechanics, prior surgery, visceral symptoms, and chronic pain contributors. Care may involve movement-based therapy, acupuncture, trigger-point injections, local anesthetic injections, selected botulinum toxin use, and coordination with GI, surgery, pelvic pain specialists, or other clinicians when needed.
For patients looking for ACNES treatment in Manhattan, MPM offers a careful, patient-centered approach to focal abdominal wall pain and suspected abdominal nerve entrapment. The goal is to clarify the pain source, avoid unnecessary assumptions, and build a treatment plan that reflects the patient’s anatomy, prior workup, symptoms, and goals.
