Is Sciatica Not a Disease Name? An Easy-to-Understand Explanation of the True Causes

"I was diagnosed with sciatica."
"Since you have pain from your buttocks down to your legs, it must be sciatica."

It is common to hear stories like this. However, in reality, "sciatica" is not a disease name.

It is a general term for symptoms such as pain and numbness that appear along the sciatic nerve, and there may be various underlying diseases hidden behind it.

In this article, we will explain in detail the true meaning of sciatica, its main causes, and when you should see a doctor.

What is sciatica?

Sciatica refers to symptoms that occur along the path of the "sciatic nerve," which is the thickest and longest nerve in the human body.

Typical symptoms include:

• buttock pain

• pain in the back of the thigh

• calf pain

• shooting pain running down to the toes

• tingling or buzzing numbness

• sharp, electric-like pain

• difficulty putting strength into the leg

and so on.

In other words, the name "sciatica" is a term that describes symptoms, just like headache or abdominal pain.

Why does sciatica occur?

Because the sciatic nerve extends from the lower back to the toes, symptoms appear when the nerve is compressed or inflamed somewhere along its path.

While the pain itself is caused by the nerves, the underlying cause of the nerve compression varies from person to person.

Cause 1: Lumbar Disc Herniation

This is a common cause in people ranging from the younger generation to middle age.

When a part of the intervertebral disc protrudes and compresses the nerve root,

• lower back pain

• buttock pain

• radiating pain to the legs

• numbness

occur.

A common characteristic is that symptoms often worsen when bending forward.

Cause 2: Lumbar Spinal Stenosis

This is frequently seen in people in their 50s and older.

Due to aging, the nerve pathway (spinal canal) narrows, compressing the nerves.

A characteristic symptom is

• pain when walking

• relief after resting briefly

• feeling better when bending forward

, which is known as 'intermittent claudication'.

Cause 3: Piriformis Syndrome

The sciatic nerve passes near the piriformis muscle located deep in the buttocks.

When the piriformis muscle becomes stiff due to a sedentary lifestyle or sports, the sciatic nerve can be irritated, causing pain or numbness from the buttocks down to the thighs.

This is a type where the cause is in the buttocks, not the lower back.

Cause 4: Lumbar Spondylosis

When vertebrae or intervertebral discs deform due to aging, it can cause irritation to the nerves.

It is often accompanied by chronic lower back pain and is commonly seen in middle-aged and older people.

Cause 5: Nerve damage due to diabetes, etc.

In diabetes, prolonged high blood sugar levels can damage nerves, leading to numbness and pain.

In this case, because the nerve itself is damaged, there may be no abnormalities found in the lower back.

Common symptoms of sciatica

Symptoms vary from person to person, but include:

• Pain only in the buttocks

• Pain only in the back of the thighs

• Numbness extending to the toes

• Tingling in the soles of the feet

• Inability to sit for long periods

• Pain upon waking in the morning

• Sharp pain when coughing or sneezing

and various others.

It is not necessarily accompanied by lower back pain.

What happens if left untreated?

Mild symptoms may improve naturally.

However, if the underlying disease progresses, it may lead to:

• muscle weakness

• difficulty lifting the ankle

• increased tendency to trip

• numbness or loss of sensation

• walking difficulties

and more.

If symptoms persist, it is important to investigate the cause.

Symptoms that require immediate medical attention

If you experience any of the following symptoms, you should seek medical attention promptly:

• inability to put strength into your leg

• inability to lift your foot

• difficulty with urination or bowel movements

• numbness in the perineal area (between the legs)

• inability to walk due to severe pain

• accompanied by fever or rapid weight loss

These may indicate an underlying condition that requires urgent care.

How can sciatica be prevented?

It is important to reduce the strain on your nerves in your daily life.

• Avoid staying in the same position for long periods

• Stretch your lower back and buttocks

• Make moderate walking a habit

• Strengthen your core and gluteal muscles

• Maintain a healthy weight

• Do not lift heavy objects using only your lower back

By continuing these practices, you can reduce the strain on your lower back and hip joints, making it easier to prevent compression of the sciatic nerve.

Summary

Sciatica is not a disease name, but a general term for symptoms such as pain and numbness that occur along the sciatic nerve.

There are various causes, including lumbar disc herniation, lumbar spinal stenosis, piriformis syndrome, lumbar spondylosis, and neuropathy caused by diabetes.

Since it is difficult to determine the cause based on symptoms alone, it is important not to self-diagnose if pain or numbness persists, and to seek a proper diagnosis from a medical institution.

By undergoing treatment tailored to the cause and improving lifestyle habits, symptom relief can be expected in many cases. Taking early action is the first step toward a comfortable daily life.