This disorder is related to puritis (itching) and not pain. Pain in this region probably has a different origin than a local sensory nerve injury.
Here is the rub. “Notalgia is described in a very high association with radiographically documented cervical spinal disease”. Why would this be? The reason is simple. Notalgia paresthetica is the description of symptoms without a cause. The cause in this case is referral pain from a degenerative disc but whomever put this term together did not know the connection.