Why does PAIN occur? Understand the Mechanism of Pain

Pain is an unpleasant and distressing physical sensation caused by disease or injury, which induces hurt and anxiety in those suffering from it.
There are many different manifestations of pain, ranging from short term (acute pain) to long term (chronic pain). Other classifications include pain in the internal organs (visceral pain), injured tissue (inflammatory pain), nerves (neuropathic pain), etc.

The reason for the occurrence of pain depends on the cause and kind of pain being experienced. In most cases, pain acts as a warning sign that the body has been afflicted by a disorder of some sort, which may have arisen due to internal sickness or external wounding. Acute pains are generally cured on their own through rest or simple medication. Chronic pains, on the other hand, are more complicated in nature and the treatment requires more elaborate diagnosis.

The mechanism of pain

Pain is an extremely personal and subjective experience and affects each individual to varying degrees. The pain signals, which can arise in any part of the body, travel through the spinal cord to the brain along thousands of specialized nerves and nerve fibres. In the brain, it is processed in the centres associated with anxiety, emotions, memory, appetite, etc. Signals and pain inputs are then returned from the brain to the spinal cord, which may heighten or diminish pain.

In some cases, pain may also be induced by damage to the brain and spinal cord, which happens after a stroke.
A constant barrage of pain signals may cause the cells at the end of nerve fibres to become over-sensitized. This is known as 'wind-up' and is one of the most common causes of chronic pain that occurs even though the root of the problem has been identified and treated.

The causes and effects of pain differ from case to case depending on the signals received by the brain and its interpretation. It affects the individual's day to day activities and if persistent, can also have a harmful impact on mental health and psychosis. Pain is always handled, diagnosed and treated differently in all patients by drawing out the best possible solution to the problem.





Why does PAIN occur? Understand the Mechanism of Pain

Does you back hurt only when you wake up in the morning or is it a chronic problem? If yes, then you need to take immediate steps to treat it. Back pain, being the common physical anomaly for people primarily in the age range of 35-50, is one of the top causes for office absenteeism and mid-life lethargy and fatigue. Usually back pain indicates an underlying problem that involves the nerves, bones and muscles.

Here are some risk factors for back pain:

Pregnancy
Stress related to work
Leading a sedentary lifestyle
Anxiety and depression
Being overweight
Over exercising
Strenuous physical work outs
Smoking
There are varied reasons as to why back pain may occur. Discussing the causes of back pain is beyond the purview of this article; the focus is now going to be on some of the stretches one can practice to get relief from back pain: 

Downward dog: A classic yoga pose, the downward dog stretches the entire back, hamstrings and the whole of the leg. Begin the process in a classic push up pose with the palms and toes on the floor. Keeping your back straight, lift your tailbone up and straighten your legs. Push the heels to the floor and breathe to get the most out of this stretch.
Child s pose: A simple stretch, it begins with you sitting back on your buttocks and then stretching the arms in front of you. Keep your forehead on the floor and breathe slowly.
Cat cow pose: If your common complaint is that of a sore and painful back, then this is one of the best stretches for you. A very simple pose, you begin by sitting on all fours, then transitioning into the cat pose by pushing your spine upwards. Hold the pose for one breath and then go to the cow pose wherein you lift your buttocks and the head while scooping your spine.

Back Pain - 3 Stretch Exercises You Must Follow!

Lower back pain can be one of the most physically debilitating things that can affect you and limit your mobility. Even if the pain isn t that acute, it could still signal something deteriorating in your lower back. While oral medications, topical creams or sprays can help in reducing pain, there are other effective remedies you can try on your own. These will be handy when you have no medications at hand. One of these is the hot and cold therapy.

Heat therapy for lower back pain

Heat works well with lower back pain as it can dilate blood vessels and improve circulation within the tissue. This will help in circulation and also result in lowering the pain. Heat therapy will also loosen up other muscles in the area and help soothe sore areas which have been taking the burden along with the lower back muscles. Some of the techniques that can be applied are:

1. All day heat wraps: These are specially manufactured belts or wraps which wrap around your abdomen and keep tightness and pressure on your lower back as well as supplying heat.

2. Electric heating pads: These are mechanized heating pads which generate heat with electricity. You can place them under you back and then either sit or sleep with it positioned behind you. However, ensure that you don t keep these for too long as they could burn your skin.

3. Hot Compress with towels or hot water bags: Use a clean towel and heat it over a conductive surface and apply it on your lower back. You can also use hot water bags for the same purpose.

Cold therapy for lower back pain

Cold therapy uses the principle of constriction of blood vessels as well as slowing circulation. This will help numb the area and thus help relieve the pain. Some of the ways these can be administered are mentioned below.

1. Ice towel: In this method, soak a towel in ice cold water, wring it to dry it and then apply on your lower back. This will numb the pain without transferring the sting of the cold or damaging your skin.

2. Ice packs: Put about half a kg of ice in a plastic Ziploc bag and pour water over the ice to just about cover it. Push out the air out of the bag and then lock it. Use this ice pack with a towel to ensure that you back doesn't get wet.

3. Ice gel packs: These are ready made packs, which can be bought from medical stores and kept frozen to be used whenever you need it in order to relieve lower back pain.

Treating Lower Back Pain Using Hot and Cold Therapy

Back pain is one of the most common debilitating disorder in the world today. The pain affects 90% of people at some point of their lives. Human back comprises of various structures (see figure) which are nerves, bones, muscles, ligaments, and tendons, any or all of which can be a source of pain. Once back pain occurs, it may become chronic (more than 4 weeks) and you shall need to consult a pain physician for relief and accurate diagnosis.
Since prevention is always better than cure,  you can save yourself from having back pain if you follow these basic tips.
Regular Exercise in Correct Form: Regular exercise is important to maintain proper muscular strength of the back. Human back is supported by several big muscle groups (see figure). They serve two functions - one is to facilitate the posture and movements of the back itself and the other is to help movements of the rest of the body appendages (arms, head, pelvis and legs).The health of these muscle group is important to take stress off the spinal bones and maintain proper function. Most of these muscles are red muscle fibers as they need to maintain their activity for prolonged periods of time. Just to give you an idea - your biceps (arm muscles) have to work only when you bend your arm. But your back muscles have to function all the time - whether you sit, walk, stand or even sleep. But the point is what kind of exercises are good for your back? The best exercises for back include body weight low impact aerobics like brisk walking, swimming, stationary bicycling, extension exercises and yoga. What is important to remember while doing these exercises if that you need to be gentle in your movements and achieve correct "form" - this is possible if you can ask someone (preferably a trainer) to observe and point out whether the back stays straight during the exercise. It has been seen that arching and excessive bending is associated with injury to the back while exercising.
Stay Hydrated and Eat Natural Nutritious diet:The inter vertebral discs contain 70 - 80% water. The muscles and tissues have 60% water content. Therefore, it is important to stay hydrated. In addition, you must eat a nutritious diet consisting of green leafy vegetables, good protein source and just enough carbohydrates. Deficiencies of essential nutrients like Vitamin D can result in diseases like osteoporosis. Another important aspect is to maintain body weight within healthy limits. This is very important as increased belly fat is linked to increased back pain due to mechanical factors.
Lift objects correctly and maintain proper posture:While lifting objects, keep them as close to body as possible. Do not slouch or bend excessively while lifting. Just keep your back straight at all times. You may bend your knees a little if required (see figure). Think before you lift and get help if needed.
While working, you must not sit for more than 45 minutes at a stretch. Walk for two minutes, go to a colleague's desk and say hi or even just drink some water or visit the washroom. Humans evolved as hunter - gatherers and our bodies are more adapted to walking / standing than to sitting for prolonged periods. Those of you who travel more and have to sit for long periods of time also need to follow above tips - avoid prolonged sitting in same posture.While exercising, improper position can do more harm than good. Therefore, proper form and posture is a must.
Bonus tip: Avoid cigarette smoking and those who smoke cigarettes to decrease your chances of having degenerative disc diseases leading to chronic back pain early in life.
Word of caution to prevent permanent damage: In case of back pain, which is not responding to home remedies or over the counter painkillers, please contact a Pain Physician to pinpoint the diagnosis and appropriate management.

3 Essential Tips to Prevent Back Pain

The causes and symptoms of chronic lower back pain

Lower back pain is characterized by a feeling of pain around the lumbar region (curve of the back connecting the upper back and glutes- muscles in the buttock that are responsible for thigh movement) caused by muscle or ligament injury. The spinal area is most likely to be affected by lower pain as it may impair routine activities like walking and standing. Any lower back pain that lasts for more than ninety days can be considered as chronic.

Causes of lower back pain

There are plenty of causes for lower back pain. Anything that exposes the lumbar area of the spine to a level of stress beyond its capacity can cause lower back pain. These causes are-

1. Disorders of the discs

The spinal area in the lower back comprises of small bones called the vertebra, which are connected to each other by pieces of cartilage known as discs. These discs act as shock absorbers, and when exposed to excessive shock can cause the disc to bulge, resulting in herniated discs. Wear and tear of the discs can also occur.

2. Spinal stenosis

Spinal stenosis occurs when the area around the spine becomes narrow. It may affect the nerves surrounding the lower back, resulting in pain.

3. Wear and tear of the joints and ligaments

Normal wear and tear of the joints and ligaments cause difficulties in holding the spine in its proper position and this progresses with age. This may cause a vertebra to slide over another and affect the nerve endings, giving rise to pain.

Symptoms of lower back pain

The symptoms of lower back pain are usually a dull or excruciating pain in the lower back. It can also affect other parts of the body such as the hips and the legs. In case of severe pain, simple activities like walking, bending and sitting will be impaired.



The Causes and Symptoms of Chronic Lower Back Pain

Pain causes a lot of discomfort in the body no matter whether the pain is in the back, legs or in the head. Almost all people experience lower-back pain at some point in their lives, which can be extremely painful and can cause considerable annoyance. The first medical specialty that comes to mind for relief of lower-back pain is Orthopedics. The other two specialists that play a vital role in treating lower-back pain are the neurosurgeons and the physiatrists.

Pain in the Back
It is very difficult for the body to source the pain when it is deep and this pain could be due to infection, disease or injuries in the back, stomach and heart. It is even possible that the pain radiates to different places in the body. Often back pain is accompanied by body changes like redness, fever, neurological problems, heat, and changes in body functions and for that diagnosis of the back pain may be very severe. Patients suffering from lower-back pain and with symptoms that comprise of weakness in the foot or other symptoms of a neurologic insufficiency must definitely see a neurosurgeon.

Back pain that occurs due to reversible problems is known to vanish in a few hours or in a day. However, if it continues longer and is accompanied by body changes, then there are chances that the condition can become worse. Visiting a doctor becomes a must for back pain if any of such characteristics are witnessed. It is always better to get evaluated by a physician.

When to Consult a Doctor Immediately

    Back pain that is followed by a shock like a car accident.
    The pain in the back worsens and is constant
    Back pain continues for more than 4-6 weeks
    The pain does not improve even after taking typical remedies such as taking pain relievers or after resting.
    Severe pain in the back in the night and that is alleviated by rest
    The back pain is accompanied by abdominal pain
    Numbness in the upper thighs, buttocks, groin or in the genital area
    Weakness or tingling sensation in the arm or legs

Role of a Neurosurgeon
The neurosurgeon provides non-surgical as well surgical care depending upon the nature of the illness or the injury, and he does not just operate. The neurosurgeons are experts and offer treatment to patients suffering from any injury or disease in the spine, brain or peripheral nerves that deal with arms, hands, feet and legs. But there are many other neurosurgeons that confine their practice to treating back pain.

Lower Back Pain - 8 Signs When You Must Visit Your Doctor

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