Prevalence of Neuropathic Pain
"Neuropathic pain (NP) is defined as pain caused by a lesion or disease of the central or peripheral somatosensory nervous system. NP affects between 5% and 10% of the US population  and examples include diabetic neuropathy, complex regional pain syndrome, radiculopathy, phantom limb pain, HIV sensory neuropathy, multiple sclerosis-related pain, and poststroke pain."
Collen, Mark, "Prescribing Cannabis for Harm Reduction," Harm Reduction Journal (London, United Kingdom: January 2012) Vol. 9, Issue 1, p. 1.