Yes , I been dizzy  for over fine days now and I just notice a knot on my artery of the neck.  I notice a little of a cough and blurry eye sight. I  went to hospital emergency had chest e-rays, eye checked and blood work not abnormal.  What could be wrong?  P.S.  I didnt notice  the neck until today.
Welcome to Chat Doctor. 1. The possible cause win this case could be lymph nodal enlargement, and vascular pathology in next place.2. Lymph nodal enlargement can be seen in infection/inflammation/malignancy anywhere in the body.3. In any case I would recumbent to get an ultrasound examination done.4. Ultrasiound will exactly tell where the lump is taking up from, nature of the lump and its extensions, also if vascular - which vessel is involved. 5. In case of mass lesion - an FNAC - fine needle aspiration cytology to assess the nature of the lump. Good luck Hope I have answered your query.Anything to ask do not hesitatehttp