Sciatica generally exhibits itself as soreness down the leg. So if you feel reading this, there’s a good possibility you understand all about it. Sciatica takes its term from the sciatic nerve, that has its roots with your lumbar (lower) spine, flows down through your thigh, into the leg and foot. The local pain dealt with down the whole leg on this condition is caused by the irritation or aggravation of the sciatic nerve.
You will find five nerve roots exiting the lumbar spine, where the sciatic nerve originates. The fingers and forearm construction quite suits that of the nerve roots; the nerve roots that exits on the spine can be like fingers and the nerves itself while the forearm is the roots being formed together. Impulses are getting sent to joints, muscles, ligaments and also other soft tissue structures with the sciatic nerve that have its way done the thigh, lower-leg and in to the foot branching off and away to small nerves.
Individuals with sciatica can experience a myriad of different signs and symptoms. Some may go through any local pain in the buttock or lower back. Others can experience a pointy pain in the low back and numbness and tingling down throughout the buttock, back of the thigh and into the lower leg and foot. Disk herniation or even a bulge or rupture in any of the disks that gives cushioning between spinal bones could be one of the causes of which this leads to a particular location of pain sensation- lower part of the buttock, towards the back of the thigh, towards the lower- leg right down to the big toe. This pain is reffered to as “‘radiating” pain. Discomfort and pain is much more diffuse and broadly experienced in the muscles and other tissues (for example, the whole foot is in pain instead of just the toe). This kind of pain is named “referred” pain. All of a sudden or without any reason, referred pain may be experienced down either legs and may even switch in one leg towards the other.
Aggravating factors in sciatica could be coughing or sneezing, sitting or straining on the toilet. Generally it will be the twisting and bending- forward movements that are the worst. That is why, activities like golf, tennis, hockey and running commonly exacerbate symptoms of sciatica.
Diagnosing the illness just isn’t particularly difficult, but determining it is true cause could be tricky. There are five structures the causes sciatic nerve irritation and aggravation. These are structure conditions that leads to the condition of Sciatica 1) a disk herniation (neurogenic sciatica); 2) a tight muscle (myogenic sciatica); 3) an irritated joint (scleretogenous sciatica); 4) a narrowing of the space where the nerve roots exit the spine (neurogenic claudication, also called intervertebral foraminal encroachment); and 5) a space-occupying lesion (any kind of growth, such as a tumor) impinging on the sciatic nerve. Fortunately, healthcare practitioners come with an expertise in differentiating between these different causes.
1. Disk herniations (neurogenic sciatica)
Bulging or herniated disks can cause pressure around the nerve roots or initiate an inflammatory response that irritates nerve roots. See Disk Herniation in our database of Neuromusculoskeletal Conditions for an entire discussion.
2. Muscles (myogenic sciatica)
Tight piriformis and gluteus muscles can squeeze or put tension on the sciatic nerve. See Piriformis Syndrome or Gluteus Medius/Maximus Muscle Syndrome in our Neuromusculoskeletal Conditions section.
3. Joints (scleretogenous sciatica)
The joints on the low back or pelvis, just like the sacroiliac joints, are common reasons for referred pain from the buttock and thigh. See Low Back Facet Syndrome.
4. Neurogenic claudication
The nerve roots that exit the backbone and make up the sciatic nerve exit through little holes in the spine called intervertebral foramen (literally, holes in between the vertebrae). Normally, the holes formed through the bony spine are big enough for the roots to exit through successfully. Sometimes, however, disease, trauma or arthritis causes the diameter of these holes to diminish. This decrease in space might cause a tightening around the nerve root, which can aggravate or irritate the nerve and cause sciatica. Sometimes the bony hole may have a spur or sharp bony structure that actually touches the nerve root, further aggravating the problem.
5. Space-occupying lesion
A space-occupying lesion describes any growth that could be impinging on the spinal cord, nerve roots or peripheral nerves. Some of the factors behind sciatica previously cited belong to this category (especially disk herniation or foraminal encroachment). However, there are more space-occupying lesions that may cause sciatica, including tumor growth, organ enlargement (from a basic disease) or simply severe scar tissue formation from previous surgeries. In addition, some women complain of Sciatica when they get an epidural during labor.
Once there is inflammation or irritation involving one of these structures, a person may feel a “hot fire” from the lower back. You should determine the reason for the fire and, if safe, to put it out. Since it is feasible that the actual cause may remain even after the pain is alleviated, you should talk with your healthcare practitioner before going back to your day-to-day activities. Even if you’re feeling better, she or he may recommend you continue to receive treatment.
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