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

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

Pain is unpleasant suffering caused by injury or illness. Back pain may be sudden/constant, dull, severe or not responding to short rest and medication. Constant pain in back in any region of spine for more than few days to weeks needs intervention.

Pain which is intense especially at night requires urgent visit to a specialist.

Sudden onset of pain in back with or without injury needs urgent attention.

Back pain with difficulty in walking, pain while getting up from position of comfort, pain during change of posture or pain after prolonged sitting (for work) can lead to serious permanent damage, if left untreated.

Pain which travels to one or both legs may be due to pressure on the nerve/s and if left untreated for long can lead to permanent weakness or damage.

Pain associated with numbness, tingling or weakness in legs, especially below the knees, commonly called Sciatica, needs to be investigated. Various spinal ailments can lead to weakness in one or two limbs or all four limbs. There may be associated or isolated numbness (loss of sensation to touch, pain or temperature) without back pain.

Numbness, tingling or weakness may be the only symptoms without any complaint or without history of back pain.

Problems related to bladder control which may be difficulty to control, hesitancy in passing or dribbling of urine. There may be associated constipation. Loss of bowel/bladder control is caused by pressure on spinal cord &/or nerves which may be due to injury, infection, disc prolapse or tumor.

Sudden swelling and redness in back usually happens after an injury or accident but sometimes are signs of underlying severe illness.

Loss of normal shape/curvatures of spine can present with or without pain. It can lead to forward, sideways or rarely backward bending.

Unintentional weight loss, loss of appetite, evening rise of fever or disturbed sleep with associated back pain/weakness/numbness needs visit to a specialist.

When Should You See Your Doctor in Back Pain?

Most of us suffer from lower back pain at some point in our lives; be it from a sedentary lifestyle, spending hours at the office desk or from strenuous physical exercises. In most cases, a little bit of rest does the trick. However, if the lower back pain persists for 3-6 weeks, physiotherapy is recommended.

How does physiotherapy help?

The main purpose behind physiotherapy is reducing lower back pain and increasing muscle and bone function, so that such instances are avoided in the future. Physiotherapy is the first line of defence against lower back pain. More drastic measures such as surgery are undertaken once physiotherapy fails to do is job.

Physiotherapy is often recommended when the back pain is caused due to lifestyle factors, a minor injury like a fall or other moderate factors. For more severe back injuries, doctors recommend surgery straight away when there is no scope of performing physiotherapy.

Low-intensity back pain can be cured using a combination of heat packs, ultrasound wave therapy and Iontophoresis (using a localized current source to introduce medical ionic compounds to the body).

A physical therapy program for back pain usually has two components:

Passive physical therapy to help reduce the patient's pain to a more manageable level

Active exercises

Passive Physical Therapy - Modalities

The physical therapist may focus on decreasing pain with passive physical therapy (modalities). These therapies are considered passive because they are done to the patient. Examples include:

Heat/ice packs

TENS units

Iontophoresis

Ultrasound

Active Physical Therapy - Back Pain Exercises

In addition to passive therapies, active physical therapy (exercise) is also necessary to rehabilitate the spine. Here are some of the common exercises for back pain:

Back Stretch: Put your hands underneath your head while lying back. Bend your knees but put your feet on the ground. Roll your legs to one side and hold them there for 10 seconds. Repeat three times for each side.

Deep Lunge: For this, you need to kneel on one knee with the other foot pointed towards the front. Lift the back knee up and hold it there for five seconds and then bring it down. Repeat this exercise three times for each side.

One Leg Stand: This is the simplest of exercises. Hold on to a wall for support while standing and face towards it. Then slowly hold one leg and bend it behind you. Hold in the same position for five seconds before bringing it down. Repeat the process three times for each leg in five second gaps.

Physiotherapy for Back Pain

Today  working  usually implies sitting at a desk from morning to evening. While this may seem more comfortable than working in the fields, sitting at a desk can trigger a host of back problems. This is because sitting in the same position all day makes the spine bend forward and lowers the efficiency of the back muscles. Working at a desk not only strains your back, but also restricts your movements to typing on a keyboard and moving a mouse. 

Once a back problem begins, it usually lasts a lifetime hence; here are a few tips to save your back.

Get yourself a good chair: Your chair is crucial to your back s health. Avoid the hard backed plastic chairs and pick a more flexible mesh backed office chair if you sit at the table for a long span of time. Ergonomic chairs may seem expensive, but are worth the expense in the long run.
Stretch your muscles: Sitting in the same position all day, puts the muscles under stress and with time can constrict the muscles. Make it appoint to stand up every 30 minutes and stretch your back and sides. Also try rotating your hips and shoulders form time to time.
Take a break: No matter how much work you have in front of you, take a break at the end of each hour. Taking even 2 minutes off out of 60 every hour can have a huge impact on your health. If you still feel guilty skip using the phone to connect with your colleague and walk over to their desks instead.
Get a pedometer: Keeping a pedometer will help you track the number of steps taken in a day. Ideally, a person should take 10,000 steps a day to stay healthy. If you sit at a desk for majority of the day, take every opportunity you can to up the count on your pedometer. Go for a walk around your office after lunch or park your car a little way off from the office to create opportunities to walk.
Take the stairs: As far as possible avoid escalators and elevators. Instead climb stairs for a quick workout. If your office is on the 20th floor, walking up may not be feasible, but you could get off the elevator on the 18th floor and walk up the remaining two floors.
Eat healthy: Lastly, pay attention to what you eat. Avoid eating at the office canteen or picking up a bite at the coffee shop and carry lunch from home. This ensures that you eat a balanced meal.

World Spine Day-6 Back Saving Tips for People Who Sit at a Desk All Day

Exercises to cure long hours of sitting
Most of us are used to sitting throughout the day, willingly or unwillingly due to work or otherwise. We spend more hours sitting, and most of our work is done in this position. The downsides of this are many, one of them being a stiff back which not only causes a lot of pain but also initiates many other health problems.
Train yourselves on these highly effective exercises which minimise the pain and keep your muscles active.

1. Back press: put towel on your back and press the towel with the back. Hold that position for 10 sec. Repeat 10 times. Do not hold your breath while applying pressure at the back.
2. Bridges: lie on the floor, bend your knees and secure your feet on the ground. Raise your hips upwards so that your body forms a straight line from your shoulders to your knees. Release and go back to previous position.
3. Knee to chest exercise: just lie down on an exercise mat, bend your one knee while lying and try to touch that knee to the stomach. Hold it for 10 seconds. Repeat this with the other leg. Alternate the legs each time.
4. Bilateral knee to chest: bend both the knees while lying on bed. With support of your hands try bringing both bent knees to touch the stomach. Hold that position for 10 seconds. Repeat 5 times.
5. Static abdominal exercise: lying on your back, try to contract your stomach without holding your breath. Hold it for 10 seconds. Repeat the exercise for 7 or 10 times.
6. Knee to opposite chest: lying on your back, bend your knees. Try bringing one knee to opposite side of the chest and hold that position for 7 sec. Do this for 7 times and repeat the same for the other leg too.
7: leg swings: these are easy and fun. Stand by the wall, hold on to a rod or something similar to keep balance. Now with the leg that is not towards the wall, swing. Swing your leg from front to back, left to right. Do not be too quick, do this at a mediocre pace. Repeat with the other leg.
8: static glutei: lying on the stomach, squeeze your buttock and hold it for 10 seconds. Repeat 10 times.

General precautions:
1. Avoid bending instantly after or during the exercises. Incase you have to bend, first bend your knee then bend your back to pick up anything from ground.
2. While getting up from bed first turn to one side while lying, sideways then get up from bed slowly.
3. Apply hot pack in back whenever there is pain.
4. Try to sleep in hard part of mattress not in soft mattress.



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