News · 15 July 2026

ACNES: when persistent abdominal pain is investigated in the wrong place

Sharp or burning pain in one small area of the abdomen, while tests show nothing. Sometimes the cause is not absent; the search is focused in the wrong place.

A man at home resting his hand over a localised area of abdominal pain

Abdominal pain understandably tends to lead to investigations of the organs inside the abdomen. Blood tests, ultrasound or scans may follow. When these show no clear explanation, the pain can be labelled ‘unexplained’. But that does not automatically mean there is no physical cause. Sometimes the search is focused in the wrong place.

ACNES stands for Anterior Cutaneous Nerve Entrapment Syndrome. It occurs when a small cutaneous nerve becomes trapped as it passes through the abdominal wall. This can cause sharp, stabbing or burning pain in a relatively small area that a person can often point to precisely. Movement, coughing or tensing the abdominal muscles may make it worse. These symptoms can be consistent with ACNES, but they are not a diagnosis on their own. Medical assessment remains essential.

The care trap develops when every new investigation asks the same question: which abdominal organ is causing the pain? When no abnormality is found, another referral or another round of tests may follow, while the abdominal wall itself remains outside the search.

Daily life continues in the meantime. Sleeping, working, driving, exercising or lying on one side can become increasingly difficult. Repeatedly having to explain the same symptoms can also take its toll. People may feel unheard or begin to doubt their own experience, even though the pain is real.

Zorgfuik has therefore brought its ACNES information together in a detailed dossier. It explains how clinicians may recognise ACNES, why diagnosis can be delayed, which treatment options may be considered and how persistent pain can affect everyday life. It also includes experiences from people who went through years of investigations before someone examined the abdominal wall.

The aim is not to encourage self-diagnosis. It is to show that ‘nothing found’ is not the same as ‘nothing wrong’. Sometimes the route out of a care trap starts with asking a different question.