angioneurosis

from The Century Dictionary.

• noun In pathology, morbid vaso-motor action, brought on independently of any perceptible lesion, whether this involves an abnormal temporary or lasting contraction of the vessels of the part (angiospasm) or a relaxation (angioparesis).

from the GNU version of the Collaborative International Dictionary of English.

• noun (Med.) Any disorder of the vasomotor system; neurosis of a blood vessel.