Infection
It is quite rare for infections to cause neuropathic pain. Shingles [4] for example, which is caused by reactivation of chickenpox virus, can trigger several weeks of neuropathic pain along a nerve. Postherpetic neuralgia is a rare complication of shingles that involves persistent nerve pain.
Another infection that can cause nerve pain is syphilis [5]. It causes a burning, stinging unexplained pain. People with HIV may experience this unexplained pain.
Toxins
Constant exposure to harmful chemicals, such as pesticides and insecticide, for a long period of time can lead to neuropathy. Exposure to mercury, thallium, arsenic, and lead.m can also cause nerve pain.