Pain in right arm and tingling in fingers

Overview

Carpal tunnel syndrome is caused by pressure on the median nerve. The carpal tunnel is a narrow passageway surrounded by bones and ligaments on the palm side of the hand. When the median nerve is compressed, symptoms can include numbness, tingling, and weakness in the hand and arm.

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When to see a doctor
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Risk factors
Associated Procedures
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Products & Services
Why does my right arm hurt and fingers tingle?
When should I worry about my right arm tingling?
What causes tingling and numbness in right arm and hand?
What does tingling in right hand fingers mean?

The anatomy of the wrist, health problems and possibly repetitive hand motions can contribute to carpal tunnel syndrome.

Proper treatment usually relieves the tingling and numbness and restores wrist and hand function.

Symptoms

Carpal tunnel syndrome symptoms usually start gradually and include:

Tingling or numbness. You may notice tingling and numbness in the fingers or hand. Usually the thumb and index, middle or ring fingers are affected, but not the little finger. You might feel a sensation like an electric shock in these fingers.
The sensation may travel from the wrist up the arm. These symptoms often occur while holding a steering wheel, phone or newspaper, or may wake you from sleep.
Many people "shake out" their hands to try to relieve their symptoms. The numb feeling may become constant over time.
Weakness. You may experience weakness in the hand and drop objects. This may be due to the numbness in the hand or weakness of the thumb's pinching muscles, which are also controlled by the median nerve.

When to see a doctor

See your health care provider if you have signs and symptoms of carpal tunnel syndrome that interfere with your normal activities and sleep patterns. Permanent nerve and muscle damage can occur without treatment.

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Causes

Carpal tunnel syndrome is caused by pressure on the median nerve.

The median nerve runs from the forearm through a passageway in the wrist (carpal tunnel) to the hand. It provides sensation to the palm side of the thumb and fingers, except the little finger. It also provides nerve signals to move the muscles around the base of the thumb (motor function).

Anything that squeezes or irritates the median nerve in the carpal tunnel space may lead to carpal tunnel syndrome. A wrist fracture can narrow the carpal tunnel and irritate the nerve, as can the swelling and inflammation caused by rheumatoid arthritis.

Many times, there is no single cause of carpal tunnel syndrome. It may be that a combination of risk factors contributes to the development of the condition.

Risk factors

A number of factors have been associated with carpal tunnel syndrome. Although they may not directly cause carpal tunnel syndrome, they may increase the risk of irritation or damage to the median nerve. These include:

Anatomic factors. A wrist fracture or dislocation, or arthritis that deforms the small bones in the wrist, can alter the space within the carpal tunnel and put pressure on the median nerve.
People who have smaller carpal tunnels may be more likely to have carpal tunnel syndrome.
Sex. Carpal tunnel syndrome is generally more common in women. This may be because the carpal tunnel area is relatively smaller in women than in men.
Women who have carpal tunnel syndrome may also have smaller carpal tunnels than women who don't have the condition.
Nerve-damaging conditions. Some chronic illnesses, such as diabetes, increase the risk of nerve damage, including damage to the median nerve.
Inflammatory conditions. Rheumatoid arthritis and other conditions that have an inflammatory component can affect the lining around the tendons in the wrist and put pressure on the median nerve.
Medications. Some studies have shown a link between carpal tunnel syndrome and the use of anastrozole (Arimidex), a drug used to treat breast cancer.
Obesity. Being obese is a risk factor for carpal tunnel syndrome.
Body fluid changes. Fluid retention may increase the pressure within the carpal tunnel, irritating the median nerve. This is common during pregnancy and menopause. Carpal tunnel syndrome associated with pregnancy generally gets better on its own after pregnancy.
Other medical conditions. Certain conditions, such as menopause, thyroid disorders, kidney failure and lymphedema, may increase the chances of carpal tunnel syndrome.
Workplace factors. Working with vibrating tools or on an assembly line that requires prolonged or repetitive flexing of the wrist may create harmful pressure on the median nerve or worsen existing nerve damage, especially if the work is done in a cold environment.
However, the scientific evidence is conflicting and these factors haven't been established as direct causes of carpal tunnel syndrome.
Several studies have evaluated whether there is an association between computer use and carpal tunnel syndrome. Some evidence suggests that it is mouse use, and not the use of a keyboard, that may be the problem. However, there has not been enough quality and consistent evidence to support extensive computer use as a risk factor for carpal tunnel syndrome, although it may cause a different form of hand pain.

Prevention

There are no proven strategies to prevent carpal tunnel syndrome, but you can minimize stress on the hands and wrists with these methods:

Reduce your force and relax your grip. If your work involves a cash register or keyboard, for instance, hit the keys softly. For prolonged handwriting, use a big pen with an oversized, soft grip adapter and free-flowing ink.
Take short, frequent breaks. Gently stretch and bend hands and wrists periodically. Alternate tasks when possible. This is especially important if you use equipment that vibrates or that requires you to exert a great amount of force. Even a few minutes each hour can make a difference.
Watch your form. Avoid bending your wrist all the way up or down. A relaxed middle position is best. Keep your keyboard at elbow height or slightly lower.
Improve your posture. Incorrect posture rolls shoulders forward, shortening the neck and shoulder muscles and compressing nerves in the neck. This can affect the wrists, fingers and hands, and can cause neck pain.
Change your computer mouse. Make sure that your computer mouse is comfortable and doesn't strain your wrist.
Keep your hands warm. You're more likely to develop hand pain and stiffness if you work in a cold environment. If you can't control the temperature at work, put on fingerless gloves that keep the hands and wrists warm.

Carpal tunnel syndrome care at Mayo Clinic

Feb. 25, 2022

Carpal tunnel syndrome fact sheet. National Institute of Neurological Disorders and Stroke. https://www.ninds.nih.gov/Disorders/Patient-Caregiver-Education/Fact-Sheets/Carpal-Tunnel-Syndrome-Fact-Sheet. Accessed Oct. 25, 2021.
Carpal tunnel syndrome. American Academy of Orthopaedic Surgeons. https://orthoinfo.aaos.org/en/diseases--conditions/carpal-tunnel-syndrome. Accessed Oct. 25, 2021.
Kothari MJ. Clinical manifestations and diagnosis of carpal tunnel syndrome. https://www.uptodate.com/contents/search. Accessed Oct. 26, 2021.
Kothari MJ. Carpal tunnel syndrome: Etiology and epidemiology. https://www.uptodate.com/contents/search. Accessed Oct. 26, 2021.
Chien HS, et al. Aromatase inhibitors and risk of arthritis and carpal tunnel syndrome among Taiwanese women with breast cancer: A nationwide claims data analysis. Journal of Clinical Medicine. 2020; doi:10.3390/jcm9020566.
Yung M, et al. Modeling the effect of the 2018 Revised ACGIH Hand Activity Threshold Limit Value (TLV) at reducing risk for carpal tunnel syndrome. Journal of Occupational and Environmental Hygiene. 2019; doi:10.1080/15459624.2019.1640366.
Amadio PC (expert opinion). Mayo Clinic. Nov. 15, 2021.
Kothari MJ. Carpal tunnel syndrome: Treatment and prognosis. https://www.uptodate.com/contents/search. Accessed Oct. 26, 2021.
American Academy of Orthopaedic Surgeons. Management of Carpal Tunnel Syndrome Evidence-Based Clinical Practice Guideline. https://aaos.org/quality/quality-programs/upper-extremity-programs/carpal-tunnel-syndrome/. Accessed Oct. 26, 2021.
Hunter AA, et al. Surgery for carpal tunnel syndrome. https://www.uptodate.com/contents/search. Accessed Oct. 26, 2021.
AskMayoExpert. Carpal tunnel syndrome. Mayo Clinic; 2018.
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Coenen P, et al. Associations of screen work with neck and upper extremity symptoms: A systematic review with meta-analysis. Occupational and Environmental Medicine. 2019; doi:10.1136/oemed-2018-105553.

Associated Procedures

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Products & Services

Why does my right arm hurt and fingers tingle?

A common cause of numbness, tingling, and pain in the forearm and hand, carpal tunnel syndrome is caused by a compression or irritation of the median nerve in the narrow passageway on the palm side of your wrist called the carpal tunnel.

When should I worry about my right arm tingling?

Arm numbness can occur for several reasons that range from mild causes, such as sleeping in the wrong position, to a severe medical condition, such as a heart attack. Sudden numbness in one or both arms may be a sign of a heart attack, stroke, or nerve damage, especially if a person has other symptoms.

What causes tingling and numbness in right arm and hand?

Numbness and tingling can be caused by diseases of the central nervous system. Multiple sclerosis, stroke, and other disorders of the brain and spinal cord may sometimes cause numbness in the forearm and hand. Other diseases can affect the nerves in the upper limb, causing numbness, tingling, burning.

What does tingling in right hand fingers mean?

In many cases, tingling fingers are the result of a lack of blood supply reaching the fingers or damage to a nerve that extends to the hand and fingers. Infection, inflammation, or an underlying medical condition can also cause tingling fingers.