Symptoms include burning pain in the lower legs after, say, a short walk to the mailbox.

WSJ: New Tactics to Treat Artery Disease That Harms Legs

Then came a burning pain under the nails of her fingers and toes.

CNN: Richard Lacayo

Postherpetic neuralgia affects your nerve fibers and skin, and the burning pain associated with postherpetic neuralgia can be severe enough to interfere with sleep and appetite.

CNN: Postherpetic neuralgia

There were five symptoms that very few women identified as possibly being due to cancer: vaginal itching or burning, back or abdominal pain, being tired all the time, having to pass urine very badly or more often than usual, and bloating.

MSN: 5 signs of gynecological cancer women ignore

Conventional analgesics can do little to ease this burning sensation which seems to be similar to the phantom pain often suffered by amputees but some sufferers say that a joint at bedtime makes the difference between their sleeping and not doing so.

ECONOMIST: Marijuana as a medicine