What causes sciatica?

Causes of sciatica. There are a number of underlying causes of sciatica include:
Degenerative disc disease
Disc degeneration is very common when people age. If you experience one or more degenerated discs in the lower back, a nerve root will be irritated and sciatica will be caused.

• Lumbar spinal stenosis
Spine will age when you are over the age of 60, lumbar spinal stenosis will be caused. Stenosis in this area will cause narrowing of the spinal canal, leading to overgrowth of soft tissue, and a bulging disc placing pressure on the nerve roots. Sciatica pain will be the result.

Pregnancy
Weight gain during pregnancy will shift one’s centre of gravity, making the pregnancy woman easier to sustain sciatica.

Muscle strain
Inflammation resulted from a muscle strain can put pressure on a nerve root and cause sciatica.

• Infection
Though the situation is rare, infection occurs in the lower back can affect the nerve root and cause sciatica.

• Spinal tumor
A spinal tumor can impinge on a nerve root in the lower back and cause sciatica.
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Related Questions

What causes sciatica pain?

Pyriformis v disc. It can occur due to disc herniation in lower back or due to a hip muscle known aa pyriformis irritating the sciatic nerve which it straddles in the buttock region mimicking a herniation pattern. Intrapelvic lesions and lesions of sciatic nerve can cause symptoms. Late lyme disease can cause this pain pattern, spondylolysis/ listhesis or spinal stenosis or a synovial cyst or other mass in spine, . Read more...
Many Etiologies. Sciatica refers to entrapment/pressure against the nerve itself often at the level of the piriformis muscle or in the spine where one or more of the nerve roots exit that make up the sciatic nerve. Spine conditions such as disc disease, spondylolisthesis, spinal stenosis, and tumors/masses can cause sciatica. It is important to get a comprehensive work up including MRI if your symptoms persist. Read more...
Spine Injury. This chronic pain in the distribution as you suggested is the result of an irritated nerve or facet joints or other injury typically in the lumbar spine (low back) which are caused by herniated disks, spinal stenosis or degenerative disc disease, etc requiring further evaluation by a spine specialist. Read more...

What causes sciatica during pregnancy?

Pressure. There are a few causes of sciatica during pregnancy- among these are pressure on the lumbar plexus of nerves by the uterus/baby, increased pressure on the disks from increased weight in pregnancy, or simply increased stress on the piriformis muscle imitating sciatica. There are a few more but these are some of the more common ones. Read more...
Most common-pyriform. The fetus can compress the pyriformis muscle and cause it to spasm. It is easier to occur when the pelvis widens, already stretching this muscle. This muscle overlies the sciatic nerve (actually one third of people have sciatic nerve branches passing through it! when it cotracts-bingo, an abrupt onset of sciatica! Read more...
Lots of Reasons. When pregnant, there are so many things going on. Your hormones are very different causing your ligaments to stretch quite a bit especially in the pelvis resulting in pain. Also the baby's position can place stress on your spine resulting in bulging discs or even herniated disks causing the sciatica pain. Recommend seeing a pregnancy specialized therapist that can guide you through this. Read more...

If I have hypotrophic facet sclerosis, can that b what caused sciatica?

Yes. Facrt sclerosis hypertrophic means joint arthritis with bone spurring which can lead to pressure on L5 or s1 nerve roots and produce posterior leg pain with standing and walking or siatica. Read more...
Spinal stenosis. Sounds like you have hypertrophic facets which can contribute to spinal stenosis, meaning that they can put pressure on the nerves and cause radiating pain down the leg. So to answer your question- yes. Read more...
Hypertrophic? Hypotrophic suggests the joint didn't grow into the right size. Unsure, but I would suggest you see a spine specialist to address what your MRI findings are and how that relates to sciatica pain. Read more...

What could cause sciatica pain in my hip?

Sciatica. True sciatica is leg pain that shoots from back, down the leg past the knee. This mimics the path of the sciatic nerve, thus it's name. Mri of the spine or pelvis would serve to differentiate in most cases if exam and history is not clear. Young patients more likely to have herniated disc. Older patients, pressure from arthritic spurs. All can be treated non-surgically if not getting worse. Read more...
Spine Injury. This chronic pain in the distribution as you suggested is the result of an irritated nerve or facet joints or other injury typically in the lumbar spine (low back) which are caused by herniated disks, spinal stenosis or degenerative disc disease, etc requiring further evaluation by a spine specialist. Read more...

What can cause sciatica pain when MRI is clear?

Piriformis Syndrome. Peripheral sciatica occurs when the sciatic nerve is compressed in the buttock or other the proximal hamstrings, and commonly, the pyriformis muscle may be a culprit. Some pts have problems with their sacro-iliac joint, which could mimic sciatic-like problems. Read more...
Several things. Piriformis syndrome could do that. Peripheral neuropathy for many reason.(diabetes) any injury to the sciatic nerve or major branches after exiting the spine. Read more...
Spine Pain Options. This chronic pain in the distribution as you suggested is the result of an irritated nerve or facet joints or other injury typically in the lumbar spine (low back) which are caused by herniated disks, spinal stenosis or degenerative disc disease, etc requiring further evaluation by a spine specialist and may be candidate for facet injections/radiofrequency ablation and epidural steroid injection. Read more...

What is mild generative disc disease associated with sciatica? What causes it?

Myofascial pain. Sciatica is the word used to describe pain radiating down a leg and assumed to come from disc problems in the lower back. Most of the time, an examination of your fascia will show where the injuries to your fascia are located, and which of these old injures are causing the radiating nerve-like pain you call sciatica. It is NOT from mild degenerative disc disease. www.blatmanhealthandwellness.com. Read more...

What is mild generative disc disease associated with sciatica? What causes it?

Wearing out. Disc dries out, wears out, or suffers infection/inflammation called discitis.If it's assoc'd w/sciatica, it could actually be referred pain from an annular disc tear.Otherwise, sciatica has many causes from pinched nerve due to lumbar vertebral dysfunction, SI jt problem, piriformis syndrome, etc.I never assume that just because disc disease is present that it is THE cause until others ruled out. Read more...

What are the causes of sciatica? Is it always a herniated disc problem?

No. Sciatica is common term for pain going down the back of the leg. Other things can mimick this such as sacroiliac joint pain, zpiriformis tender point ( this muscle rund diagonally across the buttock), or referred pain from the lower joints in your back. Read more...
Nerve irritation. It is due to irritation of one of the nerve roots which combine to form the sciatic nerve. Read more...
Not a disk. The vast majority of people with sciatic pain (pain radiating from the lower back or buttock down the back of the leg) do not have a herniated disk. The most common cause is muscle spasm. Many people have slightly herniated disks and surgeons are only too happy to take the disk out, but most of the of back surgeries are unnecessary. The best treatment is physical therapy and staying in good shape. Read more...
Lay term. Sciatica, when used by medical professionals, is synonymous with radicular pain.. However, lay people use it to describe all back and/or leg pain. So before we address causes, lets start with definitions - please tell us what pain you mean when you use the term "sciatica"? Read more...
No. Sciatica is really a misnomer. Most causes of leg pain are more appropriately called radiculopathy, because the compression occurs in the spinal canal and the sciatic nerve doesn't form until much lower in the body. Other causes "sciatic" pain include, spinal stenosis, tumors, pyriformis syndrome, pelvic pathology, neuropathy, and cervical spine pathology. Read more...
Spine Pain Options. This pain in the distribution as you suggested is the result of an irritated nerve or facet joints or other injury typically in the lumbar spine (low back) which are caused by herniated disks, spinal stenosis or degenerative disc disease, etc requiring further evaluation by a spine specialist and may be candidate for facet injections/radiofrequency ablation and epidural steroid injection. Read more...

What could be causing my sciatica to hurt in my hip?

Nerve irritation. Sciatica is a term used to imply an irritation of the sciatic nerve. The sciatic nerve supplies the posterior aspect of thigh and gluteal region. Read more...
It's possible. I would see a pain/spine specialist to determine if your hip is involved or if its all coming from your spine. Read more...