What Causes Nerve Pain All Over Body? Here’s What to Know

Nerve pain that shows up all over your body usually means something is affecting nerves broadly rather than pinching a single one. Common causes include diabetes, vitamin B12 deficiency, thyroid problems, certain medications, and autoimmune conditions. When pain is widespread, doctors look for a body-wide cause instead of a single site of injury.

If you feel burning, tingling, stabbing, or electric-shock sensations in many places at once, that pattern matters. It points doctors toward a different set of explanations than pain in one hand or one foot. This article explains what causes nerve pain all over body, how doctors sort through the possibilities, and what treatments actually have evidence behind them.

What Does Nerve Pain All Over the Body Actually Feel Like?

Nerve pain has a distinct quality that separates it from muscle or joint pain. People often describe burning, tingling, pins and needles, numbness, or sudden electric shocks. Some say their skin hurts to touch, even from a bedsheet.

When this occurs in many areas at once, doctors call it polyneuropathy. The word means “many nerves diseased.” It usually starts in the feet and hands and moves inward over time. This pattern is called a stocking-glove distribution.

Widespread nerve pain is not the same as fibromyalgia, though the two can be confused. Fibromyalgia causes widespread muscle aching and tenderness. Nerve pain tends to follow nerve pathways and often comes with numbness or tingling. Some people have both conditions, which complicates diagnosis.

One detail worth knowing: nerve pain can be present even when standard tests look normal. Small fiber nerves are too thin to show up on routine nerve conduction studies. A skin biopsy can detect small fiber damage when other tests come back clean.

What Causes Nerve Pain All Over Body?

Diabetes is the most common cause of widespread nerve pain in the United States. High blood sugar damages nerves over years, usually starting in the feet. When blood sugar stays elevated, the damage can spread upward and affect the hands and arms.

But diabetes is far from the only cause. Here are the main categories doctors consider:

• Metabolic causes: Diabetes, prediabetes, thyroid disease, and kidney failure can all damage nerves throughout the body.
• Nutritional deficiencies: Low vitamin B12, low vitamin B6, and low vitamin E can harm nerves. B12 deficiency is especially common in people over 50, vegetarians, and anyone taking long-term acid-reducing medications.
• Autoimmune conditions: Guillain-Barré syndrome, lupus, Sjögren’s syndrome, and rheumatoid arthritis can all attack nerves.
• Infections: HIV, Lyme disease, shingles, and hepatitis C can cause nerve damage.
• Medications: Some chemotherapy drugs, certain antibiotics, and older HIV medications can damage nerves. This is called drug-induced neuropathy.
• Alcohol use: Long-term heavy drinking damages nerves directly and also causes vitamin deficiencies that harm them further.
• Genetic conditions: Charcot-Marie-Tooth disease and other inherited neuropathies run in families.
• Unknown causes: When no cause is found, it is called idiopathic neuropathy. This accounts for a meaningful share of cases.

Sometimes more than one cause is at work. A person with diabetes who also drinks heavily and has low B12 faces three separate hits to the same nerves.

How Do Doctors Figure Out the Cause?

Doctors start with a detailed history and a physical exam. They ask when symptoms started, where they began, and whether they have spread. They check reflexes, vibration sense, and pinprick sensation in the feet and hands.

Blood tests usually come next. A typical workup checks blood sugar and A1C, vitamin B12 and folate levels, thyroid function, kidney function, and sometimes markers for autoimmune disease. These tests can identify or rule out many of the common causes.

If those tests are normal, doctors may order nerve conduction studies and electromyography. These measure how well electrical signals travel through nerves and muscles. A skin biopsy can check for small fiber neuropathy when standard tests are normal.

Despite thorough testing, no cause is found in a significant number of cases. That outcome is frustrating but not unusual. It does not mean the pain is not real.

Can Nerve Pain All Over the Body Be Treated?

Treatment has two tracks: fix what can be fixed, and manage what cannot. When a reversible cause is found, correcting it can stop or slow the damage. Blood sugar control in diabetes, B12 replacement in deficiency, and stopping a nerve-toxic medication are examples.

For ongoing pain, several medications have evidence behind them. Certain antidepressants and anti-seizure drugs are commonly prescribed for nerve pain. These include duloxetine, pregabalin, gabapentin, and amitriptyline. They do not work for everyone, and relief is often partial rather than complete.

Topical treatments like lidocaine patches or capsaicin cream may help when pain is localized. For widespread pain, oral medications are usually needed.

Non-drug approaches have varying levels of evidence. Physical therapy can help maintain strength and balance. Some research suggests exercise may reduce neuropathic pain, though results vary. TENS units are widely used but evidence for their effectiveness in neuropathy is mixed.

No treatment currently reverses established nerve damage. That is an honest limitation. The goal is usually to reduce pain, protect remaining nerve function, and prevent complications like falls or foot injuries.

What Lifestyle Factors Affect Nerve Pain?

Blood sugar control matters more than any other single factor for people with diabetes-related nerve pain. Keeping A1C in a target range agreed with your doctor can slow progression. The exact target varies by person.

Alcohol is a direct nerve toxin. Reducing or stopping alcohol use can prevent further damage, though it rarely reverses existing pain.

Nutrition plays a supporting role. B12, B6, and folate are all needed for healthy nerves. A balanced diet usually covers these, but people with absorption problems may need supplements. Very high doses of B6 can actually cause nerve damage, so more is not better.

Smoking narrows blood vessels and reduces blood flow to nerves. Quitting helps circulation throughout the body.

Regular movement helps maintain muscle strength and balance, which reduces fall risk. This matters because numbness in the feet makes falls more likely.

When Should You See a Doctor?

See a doctor promptly if nerve pain is spreading, getting worse, or affecting your ability to walk or use your hands. Early evaluation gives the best chance of finding a treatable cause.

Seek emergency care if you have sudden weakness, trouble breathing, loss of bladder or bowel control, or rapid-onset numbness. These can signal a serious condition like Guillain-Barré syndrome that needs immediate treatment.

Also pay attention to foot injuries you cannot feel. People with numbness in their feet can develop wounds or infections without noticing. Check your feet daily if you have neuropathy.

Living with widespread nerve pain is genuinely hard. The pain is real, and the search for a cause can take time. Working with a neurologist or pain specialist gives you the best shot at finding answers and reducing symptoms.