Boys may be encouraged to get up and fall over again. Girls may be cuddled until they stop crying. Although there are nerve endings all over the body, all the messages signaling pain relief are processed in the brain. At the other end of the scale, doctors have no way of knowing exactly how much pain is being experienced by their patients.
Technology is trying to produce a more scientific way of measuring pain using brain scans. If this research is a success, it should reduce overprescribing potentially addictive opiate drugs. So far, the researchers think they have found the bit that registers lower back pain. In a study involving 32 people, half of whom had chronic lower back pain, the participants were asked to move in the same way or were subjected to heat. If the level of blood flow and neuron activity changes as predicted as regarding healthy foods, this will allow doctors to give individual dosages rather than dosages based on averages. That's why painkillers target the neurotransmitters and block the messages before they reach the conscious levels of the brain.



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