Which sign is included among the symptoms of cervical arterial/vertebrobasilar insufficiency?

• A. Horner's syndrome
• B. Tinnitus
• C. Chest pain
• D. Abdominal pain

Answer: (A)

Cervical arterial or vertebrobasilar insufficiency can involve the sympathetic pathways in the neck, so signs of sympathetic disruption may appear. Horner’s syndrome—ptosis, constricted pupil (miosis), and reduced facial sweating (anhidrosis)—reflects disruption of sympathetic innervation to the eye and face. In cervical arterial pathology such as carotid dissection or other neck vessel issues, this sympathetic involvement can occur, making Horner’s syndrome a related sign of cervical arterial insufficiency.

Tinnitus can occur with vertebrobasilar issues but is less specific; chest or abdominal pain aren’t characteristic signs of this vascular insufficiency.