Table 2.

Etiopathogenic disorders associated with neuropathic pain syndromes^*

Toxicity	Chemotherapy, radiotherapy, arsenic/lead exposure, statin and isoniazid usage
Trauma	Phantom limb pain, postmastectomy pain, postthoracotomy pain, or any pain in major surgical regions
Compression	Nerve-entrapment syndromes like carpel tunnel syndrome, direct tumor compression, especially in tumor metastasis
Ischemia	Pain in diabetic food ulcers, vasculitis-associated neuropathy, Buerger’s disease
Infection	Postherpetic neuralgia, human immunodeficiency virus-associated neuropathy, herpes zoster-associated leprosy
Congenital diseases	Storage diseases, Fabry’s disease, amyloidosis
Autoimmune disorders	Chronic inflammatory demyelinating polyneuropathy, multifocal motor neuropathy, vasculitic neuropathy, and paraneoplastic syndromes like Eaton–Lambert syndrome, multiple sclerosis
Metabolic disorders	Diabetic neuropathy, uremic neuropathy, alcohol toxicity, beriberi

Note:

^*Some of these mechanisms usually coexist in neuropathic pain syndromes.