Systematic retrospective study of medical charts and medical imaging files, of patients consulting for acute neck pain and presenting unclassified abnormalities on dedicated vessel imaging.

Inclusion Criteria:

• acute cervical tenderness or neck pain fulfilling the characteristics of an idiopathic neck pain syndrome as defined by the International Headache Society in 1988
• the performing of a diagnostic imaging like MRI, CT or US of the cervical area with a dedicated vessel analysis
• unilateral or bilateral abnormalities of common carotid, carotid bifurcation or internal carotid arteries on dedicated vessel imaging.

Exclusion Criteria:

• patients without imaging, or without dedicated vessel analysis
• patients presenting with pain caused by a clearly identified vascular disease on dedicated vessel analysis imaging such as carotid occlusion, carotid dissection, vasculitis like giant cell arteritis.
• patients with no abnormality on cervical or vessel imaging

adult patients suffering from acute cervical pain or tenderness, fulfilling the characteristics of an idiopathic neck pain syndrome, and presenting with abnormalities of carotid arteries on dedicated vessel imaging