It is a set of symptoms includingpain caused by general compression or irritation of one of five spinal nerve roots of each sciatic nerve —or by compression or irritation of the left or right or both sciatic nerves. Symptoms include lower back pain , buttock pain, and numbness, pain or weakness in various parts of the leg and foot. Other symptoms include a” pin and needles” sensation, or tingling and difficulty moving or controlling the leg. Typically, symptoms only manifest on one side of the body. The pain may radiate above the knee, but does not always.
Sciatica is a relatively common form of lower back and leg pain, but the true meaning of the term is often misunderstood. Sciatica is a set of symptoms rather than a diagnosis for what is irritating the root of the nerve to cause the pain. Treatment for sciatica or sciatic symptoms often differs, depending on underlying causes and pain levels. Causes include compression of the sciatic nerve roots by a herniated (torn) or protruding disc in the lower back.
Definition
The term sciatica describes a symptom rather than a specific disease. Some use it to mean any pain starting in the lower back and going down the leg. Others use the term more specifically to mean a nerve dysfunction caused by compression of one or more lumbar or sacral nerve roots from a spinal disc herniation. Pain typically occurs in the distribution of adermatome and goes below the knee to the foot. It may be associated with neurological dysfunction, such as weakness. The pain is characteristically of shooting type, quickly traveling along the course of the nerve.
Causes
Spinal disc herniation
Sciatica is a relatively common form of lower back and leg pain, but the true meaning of the term is often misunderstood. Sciatica is a set of symptoms rather than a diagnosis for what is irritating the root of the nerve to cause the pain. Treatment for sciatica or sciatic symptoms often differs, depending on underlying causes and pain levels. Causes include compression of the sciatic nerve roots by a herniated (torn) or protruding disc in the lower back.
Definition
The term sciatica describes a symptom rather than a specific disease. Some use it to mean any pain starting in the lower back and going down the leg. Others use the term more specifically to mean a nerve dysfunction caused by compression of one or more lumbar or sacral nerve roots from a spinal disc herniation. Pain typically occurs in the distribution of adermatome and goes below the knee to the foot. It may be associated with neurological dysfunction, such as weakness. The pain is characteristically of shooting type, quickly traveling along the course of the nerve.
Causes
Spinal disc herniation
Spinal disc herniation pressing on one of the lumber or sacral nerve roots is the primary cause of sciatica, being present in about 90% of cases.
Sciatica caused by pressure from a disc herniation and swelling of surrounding tissue can spontaneously subside if the tear in the disc heals and the pulposus extrusion and inflammation cease.
Spinal stenosis
Sciatica caused by pressure from a disc herniation and swelling of surrounding tissue can spontaneously subside if the tear in the disc heals and the pulposus extrusion and inflammation cease.
Spinal stenosis
Other compressive spinal causes include lumbar spinal stenosis, a condition in which the spinal canal (the spaces the spinal cord runs through) narrows and compresses the spinal cord, cauda equina, or sciatic nerve roots. This narrowing can be caused by bone spurs,spondylosthesis inflammation, or herniated disc, which decreases available space for the spinal cord, thus pinching and irritating nerves from the spinal cord that travel to the sciatic nerves.
Piriformis syndrome
Piriformis syndrome is a controversial condition that, depending on the analysis, varies from a "very rare" cause to contributing to up to 8% of low back or buttock pain. In 15% of the population, the sciatic nerve runs through, or under the piriformis muscle rather than beneath it. When the muscle shortens or spasms due to trauma or overuse, it's posited that this causes compression of the sciatic nerve. It has colloquially been referred to as "wallet sciatica" since a wallet carried in a rear hip pocket compresses the buttock muscles and sciatic nerve when the bearer sits down. Piriformis syndrome cause sciatica when the nerve root is normal.
Pregnancy
Sciatica may also occur during pregnancy as a result of the weight of the fetus pressing on the sciatic nerve during sitting or during leg spasms. While most cases do not directly harm the fetus or the mother, indirect harm may come from the numbing effect on the legs, which can cause loss of balance and falling. There is no standard treatment for pregnancy induced sciatica.
Other
Sciatica can also be caused by tumours impinging on the spinal cord or the nerve roots. Severe back pain extending to the hips and feet, loss of bladder or bowel control, or muscle weakness may result from spinal tumours or cauda equine syndrome . Trauma to the spine, such as from a car accident, may also lead to sciatica.
Pathophysiology
Sciatica is generally caused by the compression of lumbar nerves L3, L4, or L5 or sacral nerves S1, S2, or S3, or by compression of the sciatic nerve itself. When sciatica is caused by compression of a dorsal nerve root (radix). it is considered a lumbar radiculopathy (or radiculitis when accompanied with an inflammatory response). This can occur as a result of a spinal disk bulge or spinal disc herniation (a herniated intervertebral disc) , or from roughening, enlarging, or misalignment (spondylosthesis) of the vertebrae, or as a result of degenerated discs that can reduce the diameter of the lateral foramen (natural hole) through which nerve roots exit the spine. The intervertebral discs consist of an anulus fibrosus, which forms a ring surrounding the inner nucleus pulposus. When there is a tear in the annulus fibrosus, the nucleus pulposus (pulp) may extrude through the tear and press against spinal nerves within the spinal cord, cauda equina, or exiting nerve roots, causing inflammation, numbness, or excruciating pain. Inflammation in the spinal canal can also spread to adjacent facet joints and cause lower back pain and/or referred pain in the posterior thigh(s). Pseudosciatic pain can also be caused by compression of peripheral sections of the nerve, usually from soft tissue tension in the piliformis or related muscles.
The spinal discs are composed of a tough spongiform ring of cartilage (annulus fibrosus) with a more malleable center (nucleus pulposus). The discs separate the vertebrae, thereby allowing room for the nerve roots to properly exit through the spaces between the vertebrae. The discs cushion the spine from compressive forces, but are weak to pressure applied during rotational movements. That is why a person who bends to one side, at a bad angle to pick something up, may more likely herniate a spinal disc than a person jumping from a ladder and landing on their feet.
Herniation of a disc occurs when the liquid center of the disc bulges outwards, tearing the external ring of fibers, extrudes into the spinal canal, and compresses a nerve root against the lamina or pedicle of a vertebra, thus causing sciatica. This extruded liquid from the nucleus pulposus "may cause inflammation and swelling of surrounding tissue, which may cause further compression of the nerve root in the confined space in the spinal canal.
Diagnosis
Sciatica is typically diagnosed by physical examination, and the history of the symptoms. Generally if a person reports the typical radiating pain in one leg as well as one or more neurological indications of nerve root tension or neurological deficit, sciatica can be diagnosed.
The most applied diagnostic test is the straight leg raise to produce Laseque’s sign which is considered positive if pain in the distribution of the sciatic nerve is reproduced with between 30 and 70 degrees passive flexion of the straight leg. While this test is positive in about 90% of people with sciatica, approximately 75% of people with a positive test do not have sciatica.
Imaging tests such as computerized tomography or magnetic resonance imaging can help with the diagnosis of lumbar disc herniation.] The utility of MR neurography in the diagnoses of piriformis syndrome is controversial.
Management
When the cause of sciatica is lumbar disc herniation, most cases resolve spontaneously over weeks to months. Initially treatment in the first 6–8 weeks should be conservative.There does not appear to be a significant difference in outcomes between advice to stay active and recommendations of bed rest. Similarly, physical therapy (exercises) has not been found better than bed rest.
Medication
Although medicines are commonly prescribed for the treatment of sciatica, evidence for analgesics is poor. Specifically, NSAIDS, do not appear to improve immediate pain and all NSAIDs appear about equivalent. Evidence is also lacking in use of opioids and muscle relaxants. In those with sciatica due to piriformis syndrome, botulism toxin injections may improve pain and or function.There is little evidence for steroids, either epidural or by pill.
Surgery
Surgery for unilateral sciatica involves the removal of part of the disc, known as a discetomy. While it results in short term benefits, long term benefits appear to be equivalent to conservative Treatment of the underlying cause of the compression is needed in cases of epidural abscess epidural tumors, and cauda equine syndrome.
The following homoeopathic medicines may prove beneficial in sciatica:--Aconite, Ammonium mur, Arsenic album, Belladonna, Colocynth, Gnaphalium, Magnesium phos, nux vomica, Rhus tox etc..
Aconite
Sciatica from exposure to colds, dampness and from suppressed perspiration indicates Aconite. there is much numbness, perverted sensation, pricking and a sense of coldness in the parts, especially toes. The pains are very severe and worse at night; the patient is restless, there is tingling along the affected nerve.
Ammonium mur
Sciatica, with aggravation of pain while sitting, somewhat relieved by walking and entirely relieved by lying down. Pains in the left hip as if the tendons were too short. Legs feel contracted. Painful jerks, feet feel as if asleep.
Piriformis syndrome
Piriformis syndrome is a controversial condition that, depending on the analysis, varies from a "very rare" cause to contributing to up to 8% of low back or buttock pain. In 15% of the population, the sciatic nerve runs through, or under the piriformis muscle rather than beneath it. When the muscle shortens or spasms due to trauma or overuse, it's posited that this causes compression of the sciatic nerve. It has colloquially been referred to as "wallet sciatica" since a wallet carried in a rear hip pocket compresses the buttock muscles and sciatic nerve when the bearer sits down. Piriformis syndrome cause sciatica when the nerve root is normal.
Pregnancy
Sciatica may also occur during pregnancy as a result of the weight of the fetus pressing on the sciatic nerve during sitting or during leg spasms. While most cases do not directly harm the fetus or the mother, indirect harm may come from the numbing effect on the legs, which can cause loss of balance and falling. There is no standard treatment for pregnancy induced sciatica.
Other
Sciatica can also be caused by tumours impinging on the spinal cord or the nerve roots. Severe back pain extending to the hips and feet, loss of bladder or bowel control, or muscle weakness may result from spinal tumours or cauda equine syndrome . Trauma to the spine, such as from a car accident, may also lead to sciatica.
Pathophysiology
Sciatica is generally caused by the compression of lumbar nerves L3, L4, or L5 or sacral nerves S1, S2, or S3, or by compression of the sciatic nerve itself. When sciatica is caused by compression of a dorsal nerve root (radix). it is considered a lumbar radiculopathy (or radiculitis when accompanied with an inflammatory response). This can occur as a result of a spinal disk bulge or spinal disc herniation (a herniated intervertebral disc) , or from roughening, enlarging, or misalignment (spondylosthesis) of the vertebrae, or as a result of degenerated discs that can reduce the diameter of the lateral foramen (natural hole) through which nerve roots exit the spine. The intervertebral discs consist of an anulus fibrosus, which forms a ring surrounding the inner nucleus pulposus. When there is a tear in the annulus fibrosus, the nucleus pulposus (pulp) may extrude through the tear and press against spinal nerves within the spinal cord, cauda equina, or exiting nerve roots, causing inflammation, numbness, or excruciating pain. Inflammation in the spinal canal can also spread to adjacent facet joints and cause lower back pain and/or referred pain in the posterior thigh(s). Pseudosciatic pain can also be caused by compression of peripheral sections of the nerve, usually from soft tissue tension in the piliformis or related muscles.
The spinal discs are composed of a tough spongiform ring of cartilage (annulus fibrosus) with a more malleable center (nucleus pulposus). The discs separate the vertebrae, thereby allowing room for the nerve roots to properly exit through the spaces between the vertebrae. The discs cushion the spine from compressive forces, but are weak to pressure applied during rotational movements. That is why a person who bends to one side, at a bad angle to pick something up, may more likely herniate a spinal disc than a person jumping from a ladder and landing on their feet.
Herniation of a disc occurs when the liquid center of the disc bulges outwards, tearing the external ring of fibers, extrudes into the spinal canal, and compresses a nerve root against the lamina or pedicle of a vertebra, thus causing sciatica. This extruded liquid from the nucleus pulposus "may cause inflammation and swelling of surrounding tissue, which may cause further compression of the nerve root in the confined space in the spinal canal.
Diagnosis
Sciatica is typically diagnosed by physical examination, and the history of the symptoms. Generally if a person reports the typical radiating pain in one leg as well as one or more neurological indications of nerve root tension or neurological deficit, sciatica can be diagnosed.
The most applied diagnostic test is the straight leg raise to produce Laseque’s sign which is considered positive if pain in the distribution of the sciatic nerve is reproduced with between 30 and 70 degrees passive flexion of the straight leg. While this test is positive in about 90% of people with sciatica, approximately 75% of people with a positive test do not have sciatica.
Imaging tests such as computerized tomography or magnetic resonance imaging can help with the diagnosis of lumbar disc herniation.] The utility of MR neurography in the diagnoses of piriformis syndrome is controversial.
Management
When the cause of sciatica is lumbar disc herniation, most cases resolve spontaneously over weeks to months. Initially treatment in the first 6–8 weeks should be conservative.There does not appear to be a significant difference in outcomes between advice to stay active and recommendations of bed rest. Similarly, physical therapy (exercises) has not been found better than bed rest.
Medication
Although medicines are commonly prescribed for the treatment of sciatica, evidence for analgesics is poor. Specifically, NSAIDS, do not appear to improve immediate pain and all NSAIDs appear about equivalent. Evidence is also lacking in use of opioids and muscle relaxants. In those with sciatica due to piriformis syndrome, botulism toxin injections may improve pain and or function.There is little evidence for steroids, either epidural or by pill.
Surgery
Surgery for unilateral sciatica involves the removal of part of the disc, known as a discetomy. While it results in short term benefits, long term benefits appear to be equivalent to conservative Treatment of the underlying cause of the compression is needed in cases of epidural abscess epidural tumors, and cauda equine syndrome.
The following homoeopathic medicines may prove beneficial in sciatica:--Aconite, Ammonium mur, Arsenic album, Belladonna, Colocynth, Gnaphalium, Magnesium phos, nux vomica, Rhus tox etc..
Aconite
Sciatica from exposure to colds, dampness and from suppressed perspiration indicates Aconite. there is much numbness, perverted sensation, pricking and a sense of coldness in the parts, especially toes. The pains are very severe and worse at night; the patient is restless, there is tingling along the affected nerve.
Ammonium mur
Sciatica, with aggravation of pain while sitting, somewhat relieved by walking and entirely relieved by lying down. Pains in the left hip as if the tendons were too short. Legs feel contracted. Painful jerks, feet feel as if asleep.
Arsenic album
Sciatica with pain is marked by complete intermissions; it exacerbates every night at a particular hour, and becomes unbearable; it is increased by vigorous and relieved by gentle motion. It is aggravated by cold, but relieved momentarily by warmth.
Belladonna
Sciatica pains come on suddenly. There is a neuritis, and the course of the nerve is sensitive; the pain is especially severe at night, the parts are sensitive to the touch, the least concussion or a draft of air aggravates. Severe lancinating pains coming on in the afternoon or evening; has to change position often; worse from motion, noise, shock or contact; cannot bear the clothing to touch him. Relieved by letting the limb hang down, warmth and the erect posture.
Colocynth
Chief remedy of sciatica in worst cases. There are pains in the sciatic nerve extending the knee or to the heel, worse from any motion, and especially aggravated by cold. The pain is paroxysmal, followed by numbness and partial paralysis. There is a sensation which has been described as if the thigh were bound with iron bands, or as though screwed in a vise; the muscles are fearfully tense and fixed. Particularly is the right side involved and there are stitches during walking. There is a sense of constriction around the hip. The pains, too may come suddenly and leave suddenly, they may be sticking and burning, and all are worse from cold or damp and at night,when the patient can find no easy position for the limb. Colocynth typifies the sciatica due to nerve changes with no special inflammatory conditions attending it.
Gnaphalium
This remedy is quite similar to Colocynthis. O’Connor thinks it is the best remedy in the absence of the other symptoms and many others consider it specific.It has intense neuralgic pains along the nerve,and numbness. The whole trunk and the main branches seem affected, worse when lying down, worse from motion, stepping and better whiles sitting in a chair. The pains extend to the toes.
Magnesium phos
Right sided sciatica, worse cold application, touch and at night, relieved by warmth, bending double and by pressure.
Nux Vomica
Sciatica in persons who does a good deal of mental work, has mental strains and leads a sedentary life, found in prolonged office work, overstudy, and close application to business, with its care and anxieties. Person who are nervous, irritable, hypersensitive and overimpressionable with digestive disturbances, portal congestion, and hypochondrical states. Convulsions with consciousness.
Ailments from high living, so called modern living, coffee, tobacco, alcohol, quinine, taking highly spiced seasoned food, irregular diet, overeating, sexual excess, long continued mental exertion, sedentary habits, want of exercise, loss of sleep, using aromatic patent medicines, pills or exposure to cold.
Modalities;- Aggarvation morning, walking at 4 a.m., by mental exertion, after eating or overeating, touch, noise, anger, spices, narcotics, during dry weather, in cold air. Amelioration in the evening, while at rest, lying down, and in damp wet weather.
Rhus tox
Sciatica with muscular and ligamentous involvement. It is seldom adapted to recent cases, but comes in later. The pains are tearing and burning, worse during rest, relieved by motion. There is lameness and a disposition to muscular twitchings, bowels are constipated. It is a rheumatic sciatica, the fibrous sheath of the nerve being involved It is the best remedy for a combination of lumbago and sciatica. Sciatica arising from over-exposure to wet or from lifting, wrenching and over-exertion. Great relief from warmth.
Sciatica with pain is marked by complete intermissions; it exacerbates every night at a particular hour, and becomes unbearable; it is increased by vigorous and relieved by gentle motion. It is aggravated by cold, but relieved momentarily by warmth.
Belladonna
Sciatica pains come on suddenly. There is a neuritis, and the course of the nerve is sensitive; the pain is especially severe at night, the parts are sensitive to the touch, the least concussion or a draft of air aggravates. Severe lancinating pains coming on in the afternoon or evening; has to change position often; worse from motion, noise, shock or contact; cannot bear the clothing to touch him. Relieved by letting the limb hang down, warmth and the erect posture.
Colocynth
Chief remedy of sciatica in worst cases. There are pains in the sciatic nerve extending the knee or to the heel, worse from any motion, and especially aggravated by cold. The pain is paroxysmal, followed by numbness and partial paralysis. There is a sensation which has been described as if the thigh were bound with iron bands, or as though screwed in a vise; the muscles are fearfully tense and fixed. Particularly is the right side involved and there are stitches during walking. There is a sense of constriction around the hip. The pains, too may come suddenly and leave suddenly, they may be sticking and burning, and all are worse from cold or damp and at night,when the patient can find no easy position for the limb. Colocynth typifies the sciatica due to nerve changes with no special inflammatory conditions attending it.
Gnaphalium
This remedy is quite similar to Colocynthis. O’Connor thinks it is the best remedy in the absence of the other symptoms and many others consider it specific.It has intense neuralgic pains along the nerve,and numbness. The whole trunk and the main branches seem affected, worse when lying down, worse from motion, stepping and better whiles sitting in a chair. The pains extend to the toes.
Magnesium phos
Right sided sciatica, worse cold application, touch and at night, relieved by warmth, bending double and by pressure.
Nux Vomica
Sciatica in persons who does a good deal of mental work, has mental strains and leads a sedentary life, found in prolonged office work, overstudy, and close application to business, with its care and anxieties. Person who are nervous, irritable, hypersensitive and overimpressionable with digestive disturbances, portal congestion, and hypochondrical states. Convulsions with consciousness.
Ailments from high living, so called modern living, coffee, tobacco, alcohol, quinine, taking highly spiced seasoned food, irregular diet, overeating, sexual excess, long continued mental exertion, sedentary habits, want of exercise, loss of sleep, using aromatic patent medicines, pills or exposure to cold.
Modalities;- Aggarvation morning, walking at 4 a.m., by mental exertion, after eating or overeating, touch, noise, anger, spices, narcotics, during dry weather, in cold air. Amelioration in the evening, while at rest, lying down, and in damp wet weather.
Rhus tox
Sciatica with muscular and ligamentous involvement. It is seldom adapted to recent cases, but comes in later. The pains are tearing and burning, worse during rest, relieved by motion. There is lameness and a disposition to muscular twitchings, bowels are constipated. It is a rheumatic sciatica, the fibrous sheath of the nerve being involved It is the best remedy for a combination of lumbago and sciatica. Sciatica arising from over-exposure to wet or from lifting, wrenching and over-exertion. Great relief from warmth.
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