Pain, unfortunately, is a horrible necessity of life. It protects people by alerting them to things that might injure them. But some long-term pain has nothing to do with any obvious injury. One estimate suggests that one in six adults suffer from a “chronic pain” condition.
Steve McMahon, a pain researcher at King’s College, London, says that if skin is damaged — for instance with a hot iron — an area of sensitivity develops around the outside of the burn, where although untouched and undamaged by the iron, the behaviour of the nerve fibres is disrupted. As a result, heightened sensitivity and abnormal pain sensations occur in the surrounding skin. Chronic pain, he says, may similarly be caused not by damage to the body, but because weak pain signals become amplified.
This would also help explain why chronic pains such as lower-back pain and osteoarthritis fail to respond well to traditional pain therapies.
But now an entirely new kind of drug, called Tanezumab, has been developed. It is an antibody for a protein called nerve growth factor (NGF), which is vital for new nerve growth during development. NGF, it turns out, is also crucial in the regulation of the sensitisation of pain in chronic conditions.
Kenneth Verburg, one of the researchers involved in the development of Tanezumab at Pfizer, says it is not exactly clear what role NGF plays in normal physiology, but after an injury which involves tissue damage and inflammation, levels of NGF increase dramatically. The NGF seems to be involved in transmitting the pain signal. As a consequence, blocking NGF reduces chronic pain.
Tanezumab must still complete the final stages of clinical trials before it can become a weapon in the toolkit for reducing human suffering.
But unexpected pains do not always come from the body.
According to Irene Tracey, a pain researcher at the University of Oxford, how pain is experienced also depends upon a person’s state of mind. If successive patients suffer the same burn, the extent to which it hurts will depend on whether one is anxious, depressed, happy or distracted.
Such ideas are being explored with brain scans which suggest that even if a low level of pain is being sent to the brain, the signal can be turned up by the “mind” itself. Indeed, patients can even be tricked into feeling pain.
In one experiment volunteers were given a powerful analgesic and subjected to a painful stimulus — which, because of the analgesic, they could not feel. Then they were told the drug had worn off (although it had not), and subsequently complained that the stimulus hurt.
People can, therefore, feel pain simply because it is expected. They can fail to feel pain for exactly the same reasons, for example when they are given placebos or are distracted. But although pain may be subjective, that does not mean the final experience is controlled solely by the mind.
A recent paper in Proceedings of the National Academy of Sciences has shown that genes play a role in determining sensitivity to pain.
One gene, known as SCN9A, codes for a protein that allows the channels along which nerve signals are transmitted, to remain active for longer, and thus transmit more pain signals. It seems likely that this protein will attract a great deal more analgesic research. Variations in SCN9A may also explain why some patients prefer different classes of painkillers.
Although pain may be a horrible necessity, there is no doubt that humanity could cope with far less of the chronic sort. Understanding how the mind, the body and people’s genes interact to cause pain should bring more relief.
Showing posts with label Painkillers. Show all posts
Showing posts with label Painkillers. Show all posts
Stiff neck pain in the neck, how to get rid of it?
Poor position in the night may be responsible for this unpleasant pain. It is a painful twist of the neck. No doubt it is a stiff neck. Wellness: Stiff neck, pain in the neck, how to get rid of it?
Who did not already awakened one morning with severe pain in the neck. WRONG in the night may be responsible for this unpleasant pain. It is a painful twist of the neck.
No doubt it is a stiff neck.
This pain is with a vertebral disc is often caused by a false move, wrong position for too long.
Injections of Botox can relieve some torticollis however considered important. In general the torticollis is nonexistent after 25-30 years but many people say otherwise. In this case we must ask whether this is not an acute neck pain.
But how to differentiate between torticollis and neck pain?
In fact in the context of neck pain neck is trapped but not rotated as a stiff neck. A neck pain can manifest itself in constant pain and diffuse while torticollis it disappears after a few days at most.
What to do then to get rid of these evils?
In both cases torticollis and neck pain he must first sit up and rub or massage to the neck. You apply a gel heater will relax the muscles and especially avoid making too many movements your neck.
In addition, muscle relaxants, painkillers and anti inflammatory drugs can help relieve pain. At work you will watch as you settle comfortably so as not to do too much work your neck. In your bed you will banish the pillows too soft.
Small automation will help you in any way to overcome it. We must especially not torturing your body and try to lull you into a down position. Indeed, under the effect of nocturnal movements you can then enter a sleep called "deep" at some point your body is poorly positioned. It's an important thing to remember to avoid wearing more weight until you're not in a position called adequate.
Know of any way that if the disease persists too long you can make an appointment with your doctor who can help you overcome this pain through treatment descontracturant for you and help you overcome the pain that sometimes is really strong .
The Pain Differs in Women
Women feel pain more severe, more frequent and longer durations than men but are less likely to receive appropriate treatment according to the International Association for the Study of Pain.
Most doctors are insufficiently informed about the research showing genetic differences, biological and hormonal in the way pain affects women, which has implications for treatments prescribed to women, said Dr. Beverly Collett at the 12th World Congress on bread.
Most doctors are insufficiently informed about the research showing genetic differences, biological and hormonal in the way pain affects women, which has implications for treatments prescribed to women, said Dr. Beverly Collett at the 12th World Congress on bread.
Many are not aware, for example, as painkillers such as Paracetamol (Acetaminophen) are less effective for women and they cause more side effects in the past.
The long-term conditions such as migraine, irritable bowel syndrome, arthritis and fibromyalgia are more common among women.
Despite this, many women are still not believed by doctors and given a psychiatric diagnosis. While depression often accompanies the pain, it is rarely the case.
"It is only ten years since we started to understand these differences and this remains an area where there is not enough research. But even the current knowledge were not made until the average physician who has no idea that drugs such as paracetamol and morphine work differently in women, "said Dr Collett.
For example, a Swedish study showed last year that women having a heart attack are more likely to feel pain in the shoulders and back rather than in the chest and left arm. Most doctors and nurses are unaware of these differences, which has consequences threatening the lives of women, "she said.
Until recently, most pain studies were conducted on male rodents and the majority of clinical trials for drugs are made with men.
The long-term conditions such as migraine, irritable bowel syndrome, arthritis and fibromyalgia are more common among women.
Despite this, many women are still not believed by doctors and given a psychiatric diagnosis. While depression often accompanies the pain, it is rarely the case.
"It is only ten years since we started to understand these differences and this remains an area where there is not enough research. But even the current knowledge were not made until the average physician who has no idea that drugs such as paracetamol and morphine work differently in women, "said Dr Collett.
For example, a Swedish study showed last year that women having a heart attack are more likely to feel pain in the shoulders and back rather than in the chest and left arm. Most doctors and nurses are unaware of these differences, which has consequences threatening the lives of women, "she said.
Until recently, most pain studies were conducted on male rodents and the majority of clinical trials for drugs are made with men.
