A-TNF inhibitors are increasingly used in various inflammatory disorders. Multiple side effects have been reported in recent years, particularly peripheral neuropathies. We report a case of axonal neuropathy occurring after the start of treatment with Infliximab. This is a 47 years old patient, followed for Crohn's disease requiring treatment with Infliximab. Twenty-two weeks later, the patient presented a grade 4 of axonal neuropathy. We concluded to a medicinal sensitive neuropathy after elimination of other etiologies. Given the severity of the neurological symptoms, we decided to change the therapeutic class.