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

A pain in the neck, both in the metaphorical and the literal sense of the term can be quite discomforting. If we look at it from a medical point of view, the pain in the neck could be a serious sign of something being amiss and so, keeping in mind the causes of such a pain is just so important!

Recognizing the Type of Neck Pain

A pain in the neck can manifest itself in a variety of ways. Also, it need not also follow the textbook definition of the term. As a matter of fact, tingling, tenderness or numbness can also be significant symptoms of neck pain. Another major symptom can be having difficulty while swallowing. This could be much more crucial than just a problem with the digestive system.

Many cases that doctors come across when a patient comes to consult about a pain in the neck are regarding an issue with the spinal cord. At in certain cases, it could be related to an issue with the muscles which are located in the area.

When a person has neck pain, he or she should think back and try to remember if he or she was in an incident where the neck could have possibly been the recipient of some sort of impact. This could be a possible explanation of the pain. Also, if there is a pain in the neck after an incident, it is better not to delay a visit to the doctor as the person is likely to be uncomfortable. The neglect is this condition can also lead to the problem getting progressively worse.

In some cases, a pain in the neck can even be congenital. A very good example of this is wry neck, or torticollis. When a pain in the neck is diagnosed by the doctor, figuring out what the likely cause is quite an important thing to do and should be the first thing which is done by him or her as the various ways to treat a pain in the neck vary according to the cause of it.

The problem of neck pain is very common as two third of the population suffers from it at some point in their lives. This does not mean that it needs to affect a person's quality of life. The right precautions and proper medication can make sure that his or her neck is not on the line!

Causes of Neck Pain and Diagnosis

When is your pain chronic?

Your pain is chronic if it last for more than a period of six months. Chronic pain is a long-term pain whose nature can vary from mild to excruciating, and it may trouble you either continuously or at short and regular intervals. Chronic pain is so dangerous that it does not only cause discomfort and inconvenience but also robs you entirely of your capacity to work for a long time.

Chronic pain can occur in a number of organs of the human body like head, joints, back, shoulders, neck etc. In fact, pain in any part of your body can turn into chronic pain. Here are a few symptoms that can help you identify if what you are going through is, in fact, chronic pain:

- persistent and severe body pain

- burning sensation accompanied by the body pain

- fatigue and sleeplessness

- weak immune system

- stiff and sore joints

The 4 types of chronic pain disorders that you should be aware of are:

1. Nociceptive pain

The pain that affects the soft tissues of the body such as the skin and the muscles or the organs that have sensory nerves present in them is called nociceptive pain. The sensory nerves, known as nociceptors can detect the stimuli of pain and send information to the brain and the spinal cord for interpretation. The pain could be either somatic (originating in the outer body) or visceral (originating in the internal organs).

2. Neuropathic pain

This pain is caused when the nerves stop functioning normally. It is caused due to nerve disturbances that result in pain stimuli being spontaneously transmitted to the brain and spinal cord. If you are suffering from this type of chronic pain disorder, you will feel a sharp, shooting and stabbing pain. Neuropathic pain can also be caused due to the formation of neuroma (abnormal growth of the nerve tissue).

3. Psychogenic pain

The pain that is caused by psychological disorders like depression and anxiety is known as psychogenic pain. Sometimes this pain can be accompanied by physical complications like fatigue, body pain and muscle weakness.

4. Idiopathic pain

The pain that exists even though there is no physical or psychological cause for it is known as idiopathic pain. This pain is more common in people who have suffered from a pre-existing painful disorder. Some common examples of idiopathic pain are fibromyalgia (intense pain all over the body) and tmj disorders (pain in the jaw area).

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Related Tip: Why does PAIN occur? Understand the Mechanism of Pain

Your Pain is Chronic if it Falls Under These 4 Types of Chronic Pain Disorders!

A menstrual cramp is something which every woman complains of for a day or two every month. Menstrual cramps are usually the pains felt in the lower abdomen, which can occur both before and during a woman's menstrual period. These cramps are caused by a hormone called prostaglandin that causes the uterine muscles to contract during menstruation. When the uterus contracts to shed its natural lining during your period it releases a hormone called prostaglandins which causes pain and inflammation. So higher the level of prostaglandins more severe the menstrual cramps.

It might be just a minor discomfort for some, but for others it can be severe. The symptoms of menstrual cramps include pain in the abdomen, pressure in the abdomen and pain in the hips, lower back, and inner thighs as well. However, if the cramps are severe you might have an upset stomach, loose stools and vomiting too.

Three out of four women experience menstrual pains and every one out of 10 women experiences severe cramps. Here are few remedies that might help in relieving the pain:

Exercise, brisk walking or any type of physical activity can help to ease your belly pain as by being physically active your body pumps more blood, which helps in releasing endorphins to counteract the prostaglandins and reduce your cramps.
Apply heat on the lower abdomen or the area where you feel the pain as it helps to relax the contracting muscles in your uterus.
Improve your diet by reducing fat and increasing vegetables. However, avoid foods that contain caffeine and salt.
Take a warm bath as it may also provide some relief.
Add ginger in your food as it helps in lowering the levels of the pain-causing prostaglandins.
Drink chamomile tea at least three times a day.
Take fish oil supplements, vitamin B1 or both.
Make sure to get enough vitamin D.
Have an orgasm as it releases endorphins which has a pain-relieving effect and helps in boosting your mood as well.
Include more dietary magnesium such as dry almonds and boiled spinach as it helps to ease the pain of cramps.
Acupuncture also has an anti-inflammatory effect.
Take a safe painkiller to reduce pain.
Birth control pills may help relieve painful cramps, but they do come with side effects which may include spotting, breast tenderness, nausea and low sex drive.
Refrain yourself from smoking and drinking alcohol.
Finally, have appropriate rest.
Note: If you still do not get any relief despite trying some of these options then you must visit your doctor to rule out more serious health issues as the menstrual cramps are sometimes caused or worsened by other conditions and any sort of medications for such cramps are to be taken after consulting a Gynaecologist.

How to Get Relief From Severe Menstrual Cramps

The Anterior cruciate ligament (ACL) is an important ligament that gives stability to the knees. An injury to this ligament can result in a host of complications and discomfort. Children or adults who are into sports such as gymnastics, volleyball, tennis, basketball, soccer, football, often injure this ligament. As per various studies and surveys, ACL injury is more likely to affect female athletes as compared to their male counterparts.

Depending on the severity and extent of the damage, an Anterior Cruciate Ligament Injury may be ranked on a grade of 3.

Grade 1 sprains indicate a mild injury or stretching of the ligament, seldom affecting the stability of the knees.
Grade 2 sprains are indicative of a partial ligament tear (the ligament loosen up). The damage is still under control.
Grade 3 sprains are extensive and severe, indicating a complete ligament tear (the ligament often breaks in two pieces). With a complete ligament tear, the stability of the knee is also affected (the knee becomes highly unstable).
What causes Anterior Cruciate Ligament (ACL) Injury?
While a host of sports activities mentioned above increases the risk of the injury, a person may also suffer a partial or a complete anterior cruciate ligament tear under the following situations.

A jump down a ladder, a tree, or a wall. An incorrect jump or a landing may be equally responsible for the ligament tear.
A collision or a hit, especially on the knee (while playing football).
Slowing down suddenly while still in running motion. A person suddenly stopping or missing a step can also injure the ligament.
Symptoms associated with ACL injury

An excruciating pain (especially in the back and outside of the knee) is often seen in people with a complete ligament tear (the movement is yet not affected). However, within a few hours, there may a swelling around the knee, indicating the severity of the injury with internal bleeding within the knee joints.
There may be restricted knee movement. The knee also feels unstable, further limiting the movement.
Sometimes a pop in the knee can be heard just at the time of the ACL injury.
Prolonged ACL injury left unattended can result in a painful complication such as knee osteoarthritis.
Diagnosis
To diagnose the extent of the damage, the doctor may suggest

Physical examination, including a quick brief about the case history.
Imaging tests such as X-rays and MRI can go a long way to analyze the ligament injury.
In the case of extensive swelling of the knees, the doctor may carry out an arthroscopy to have a closer look inside of the knee.
An accurate and timely diagnosis is important to avoid the aggravation of the injury. In the case of swelling and knee pain, consult a doctor, and get yourself thoroughly examined.

Anterior Cruciate Ligament Injury- Causes, Symptoms, and Diagnosis

Shoulder pain can be a persistent dull and nagging sensation in the upper arm or shoulder area. It can be easily differentiated from neck pain as it is related to the movement of shoulders i.e. it will increase and decrease with shoulder movements, especially overhead activities. The other signs to identify shoulder pain is if your shoulder movements are reduced.

If you find it difficult to scratch / wash your back, comb your hair or reach your back pocket, it clearly shows you are suffering from shoulder pain. Shoulder pain can happen due to various reasons, it varies from person to person depending on the activities he/she is involved in, for e.g. sports, manual job etc. It can be a single major injury or multiple small injuries due to repetitive usage patterns. Also, degenerative changes in various parts of the shoulder can lead to shoulder pain.

In case of middle to old age, injuries that can cause shoulder pain are:

    Biceps Tendonitis
    Acromio-clavicular Joint arthritis
    Scapular Dyskinesia
    Trapezitis
    Suprascapular nerve entrapment In young age, injury due to sports or gym activity can cause shoulder pain
    Superior labral anterior/posterior (SLAP tear)lesion

Also, traumatic or repeated dislocations of shoulder can cause shoulder pain due to:

    Bankart lesion

Diagnose Shoulder Pain

Shoulder pain can be diagnosed only after thorough history taking and clinical examination. However, some imaging studies can be very helpful like:

    X-rays: Through an x-ray one can view the shoulder in many different views.
    Ultrasound: With an ultrasound, you can also check the damaged caused to the tendons and muscles of the shoulder but the quality of reporting depends upon the expertise of the doctor.
    MRI: MRI gives a clear picture of the shoulder as it shows everything related to a shoulder joint that is joints, vessels, tendons and muscles that too from different angles.
    Diagnostic Arthroscopy: A surgical procedure often used by orthopaedic surgeons to diagnose and treat issues inside a joint. Arthroscopy has the big advantage that one can use it to diagnose as well as treat at the same time.

Treatment for Various Types of Shoulder Pain

    For Shoulder Impingement or Rotator Cuff tear: Give rest to the shoulder for a few days only Dedicated Physiotherapy Protocol Bursal injections If these fail then, (Surgery)Arthroscopic sub-acromial decompression If Cuff tear is found, then one can go for Arthroscopic/Mini-open repair
    Labral Lesions: For anterior Labral lesions (Bankart's) following anterior shoulder dislocation then surgery in the form of Arthroscopic Bankart's repair is the only option to reduce risk of recurrence and degeneration.

SLAP Lesions

    Pain relief and physiotherapy as first step If this fails then following surgical options are available
    Arthroscopic debridement or repair of labrum
    Biceps tenotomy or tenodesis

Arthritis

In this case, the joint is already destroyed and has to be resurfaced for pain relief and to maintain ROM. If Rotator cuff muscles are working, then Shoulder resurfacing hemiarthroplasty (preferred in young people), that has a life of 10 to 15 years, Total shoulder replacement (preferred in middle aged to old people) has a life of 10 to 15 years. But, if rotator cuff muscle are not working then Reverse Geometry Shoulder replacement is recommended, that has a life of 10 years.

It is always advisable to get yourself diagnosed properly in case of shoulder pain as management changes depending on clinical situations. Neglecting shoulder conditions can lead to bigger problems later on.

Always remember 'a stitch in time saves nine'

Shoulder Pain: Causes, Diagnoses & Treatment

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