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A common symptom of sciatica is radiating/spreading pain running down the leg. However, the leg pain could be something to do with the blood vessels. If the pain travels from the low back to the hip, through the buttocks, down the leg, and into the foot, then more than likely it is sciatica. However, sciatica is just one condition that causes leg pain; other causes of leg pain include:
The vascular system, also called the circulatory system, comprises the vessels that circulate blood and lymph throughout the body. Problems with the vascular system are a less common cause of leg pain but can be severe. Therefore, it is vital to learn to tell the difference.
Deep vein thrombosis – DVT happens when a blood clot forms in a deep vein in the body and not the superficial veins just under the skin. The legs’ deep veins are susceptible to clotting. The formation of a clot can happen:
Deep vein thrombosis can cause leg pain or swelling but can also present without causing any symptoms. Other risk factors include:
Three main factors place individuals at risk for blood clots. They are:
Pain running down the leg from a blood clot feels like:
Blood clots and sciatica are reported to feel relatively different. The pain from a blood clot does not spread out and does not extend from or to the back. Sciatica does not cause swelling, redness, and warmth. If a doctor suspects a blood clot is causing the pain, they will order an ultrasound to confirm the diagnosis. If it is deep vein thrombosis, blood thinners could be recommended for three to six months.
Other blood vessel conditions that can cause individuals to believe they have sciatica include:
This often presents in individuals with diabetes or who smoke. It causes pain in the calf area but does not radiate throughout the leg. The pain usually presents with physical effort movement. If the pain occurs when at rest, this could be a serious medical emergency. Peripheral artery disease is a chronic condition that can worsen if lifestyle changes are not made to reduce risk factors.
This condition can cause leg pain, but not the same as sciatica. What happens is the leg is not receiving blood, causing:
This vascular condition is a medical emergency and requires immediate treatment.
This can happen after some kind of trauma to the leg.
It is considered a medical emergency and needs to be treated quickly to avoid complications.
Varicose veins can cause some pain running down the leg and/or aching, but the discomfort is not as intense. Treatment has come a long way, is less invasive, and includes:
Healthy lifestyle habits are recommended to keep the vascular system operating correctly. This includes:
If it is sciatica, fortunately, most cases go away on their own, but if treatment is needed, it is recommended to start with conservative treatments such as:
The heart sits just to the left of the midline in the chest cavity. The aorta is the largest blood vessel in the body. It leaves through the left side of the heart and transports blood to a network of blood vessels that branch out, supplying the body with oxygen and nutrients. The arteries that branch off the aorta and go to the left and right sides of the body are different.
On the right, the brachiocephalic trunk comes off the aorta and splits into the right common carotid artery and right subclavian artery. The left common carotid and left subclavian arteries branch directly off the aorta. The differences mean that the risk for arterial thrombosis is not the same for the right and left subclavian arteries. Arterial thrombosis causes the blood vessels to become stiff, causing obstruction over time and is more likely to happen in the left subclavian than in the right. The difference in arterial branching affects blood pressure measurements on the left and right arms. The blood vessels are surrounded by:
When muscles place pressure on the blood vessels around the heart, it can cause short-term turbulence changes that can affect blood pressure.
American Heart Association. Atherosclerosis and cholesterol. https://www.heart.org/en/health-topics/cholesterol/about-cholesterol/atherosclerosis
American Heart Association. What is excessive blood clotting (Hypercoagulation?) https://www.heart.org/en/health-topics/venous-thromboembolism/what-is-excessive-blood-clotting-hypercoagulation
Centers for Disease Control and Prevention. What is venous thromboembolism? https://www.cdc.gov/ncbddd/dvt/facts.html
Cleveland Clinic. Compartment syndrome. https://my.clevelandclinic.org/health/diseases/15315-compartment-syndrome
Mayo Clinic. Deep vein thrombosis overview. https://www.mayoclinic.org/diseases-conditions/deep-vein-thrombosis/symptoms-causes/syc-20352557
Mayo Clinic. Sciatica. https://www.mayoclinic.org/diseases-conditions/sciatica/diagnosis-treatment/drc-20377441
Mayo Clinic. Sciatica overview. https://www.mayoclinic.org/diseases-conditions/sciatica/symptoms-causes/syc-20377435
Mayo Clinic. Varicose veins. https://www.mayoclinic.org/diseases-conditions/varicose-veins/diagnosis-treatment/drc-20350649
Obara, Hideaki et al. “Acute Limb Ischemia.” Annals of vascular diseases vol. 11,4 (2018): 443-448. doi:10.3400/avd.ra.18-00074
ScienceDirect. (n.d.) “Virchow’s Triad.” https://www.sciencedirect.com/topics/medicine-and-dentistry/virchows-triad
The information herein on "Pain Running Down The Leg" is not intended to replace a one-on-one relationship with a qualified health care professional, licensed physician, and is not medical advice. We encourage you to make your own health care decisions based on your research and partnership with a qualified health care professional.
Our information scope is limited to chiropractic, musculoskeletal, physical medicines, wellness, sensitive health issues, functional medicine articles, topics, and discussions. We provide and present clinical collaboration with specialists from a wide array of disciplines. Each specialist is governed by their professional scope of practice and their jurisdiction of licensure. We use functional health & wellness protocols to treat and support care for the injuries or disorders of the musculoskeletal system.
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