Welcome to the Migraine and Headaches Forum! This forum is for questions and support regarding migraine and headache issues such as: abdominal
migraines, headaches caused by allergies, cluster headaches,
headaches, headaches in children, migraine headaches, sinus headaches, tension headaches, visual disturbances.
Tethered spinal cord by itself cannot cause headaches. Please refer to the link below.
http://en.wikipedia.org/wiki/Tethered_spinal_cord_syndrome It can cause low back pain, hairy patches, incontinence. I would suggest you to try OTC pain killers for some time and make sure he sleeps for 8 hrs during the night, meanwhile please schedule an appointment with a neurologist as soon as possible.