A 10-year-old boy without known medical history presented with sudden onset of headache followed by low back pain. Neurological examination was intact except for neck stiffness. On physical examination, a subtle nevus was observed on his back.
(Spinal Arteriovenous Metameric Syndrome)
Cobb syndrome is a complex of vascular malformations affecting the spinal cord, epidural space, vertebral body, paraspinal soft tissue, muscle, subcutaneous tissue, and skin that are derived from the same spinal metameric segment. For this reason, Cobb syndrome is also referred to as spinal arteriovenous metameric syndrome.
Clinical features could be related to spinal cord hemorrhage, subarachnoid hemorrhage, mass effect of the spinal cord and roots from dilated arteries and veins, venous hypertension, and vascular steal phenomenon.