Some cause pain and the expansion,or swelling, of damaged tissue.

VOA: special.2009.10.20

Their central nervous system may tell the brain that there is pain even when there is no cause for the pain.

VOA: special.2011.07.26

Many different diseases, conditions and injuries can cause chronic pain, from back problems to burns.

VOA: special.2010.05.04

Many different diseases,conditions and injuries can cause chronic pain, from back problems to burns.

VOA: special.2009.02.10

Swine flu can cause fever, head and muscle pain,cough, sore throat and stomach problems.

VOA: special.2009.04.29

And identifying the cause of the pain can be difficult, especially for untrained doctors.

VOA: special.2011.07.26

An activity can cause breakthrough pain.

VOA: special.2009.02.10

A migraine headache can cause disabling pain.

VOA: special.2009.03.18

The venom can kill dogs and cats. It can also cause temporary blindness and excruciating pain in people if the poison gets into the eyes or mouth.

VOA: standard.2010.02.07

"Now that we have discovered the endogenous capsaicin molecules, for the first time, we can block their synthesis and therefore we can treat pain at its cause."

VOA: standard.2010.05.04