Is it abnormal to have localized pain (unilateral) and occipital headache during a carotid ultrasound exam that disappears after transducer removed? I have an enlarged right carotid at the collar bone to mid neck, which is where the pain was. I also have Marfan Syndrome, with slightly dilated ascending & transverse (arch) aorta, LVH (mild), leaky valves (mild), severe resistant HTN for which I take 6 bp-related meds.