Carotidynia is a rare disease representing various aspects of pain around the carotid artery bifurcation. The pain in the carotid bifurcation area is a nonspecific symptom, and various diseases causing similar symptoms in the corresponding area should be distinguished. Mostly, carotidynia is diagnosed by history taking and physical examination, but it is not easy to distinguish carotidynia from other diseases without imaging study. Therefore, there are quite a number of inadequate treatments due to a considerable number of misdiagnosis, as infectious diseases. In US, CT scans, and MRI examinations, the authors experienced a patient who showed the outer thickening wall of blood vessels around the carotid artery, near the carotid artery bifurcation, and was diagnosed as carotidynia with clinical findings. In the follow-up that was carried out two weeks later, the thickness of the lesions was significantly decreased. Imaging studies are helpful in the differential diagnosis because carotidynia shows relatively characteristic imaging findings.