Cheiralgia paraesthetica – When the Back of the Hand Feels Numb

What is Cheiralgia paraesthetica?

Cheiralgia paraesthetica is a localized nerve irritation affecting the back of the hand, more specifically the superficial branch of the radial nerve (Ramus superficialis nervi radialis). This nerve branch supplies sensation to the skin on the thumb side of the hand but does not control any muscles. When irritated or compressed, it can lead to tingling, numbness, or burning discomfort—especially on the dorsal side of the thumb, index, and middle fingers.

Schematic illustration of the dorsal forearm and hand showing the course of the superficial branch of the radial nerve. The circle marks the most common site of compression near the radial bone edge. — Course of the superficial radial nerve (Ramus superficialis) on the back of the hand. The highlighted area indicates where the nerve is most commonly compressed—where it crosses the bony edge of the radius.

Why is it called “Handcuff Neuropathy”?

In English, the condition is often referred to as “handcuff neuropathy”, since it can be triggered by pressure on the wrist, such as from handcuffs, tight watches, bracelets, or fitness bands. While the name is vivid, it’s not limited to handcuffs. Any sustained pressure over the superficial radial nerve at the wrist can result in irritation.

What causes it?

The superficial branch of the radial nerve runs just under the skin on the back of the hand and wrist. Because it lies so close to the surface, it is especially vulnerable to direct pressure or repeated friction.

Common triggers include:

Watches, fitness trackers, or bracelets worn too tightly
Splints or compression bandages on the wrist
Exercise equipment that presses on the wrist
Hand tools resting against the dorsal wrist during use
Sleep positions that place pressure on the wrist

Schematic illustration of a right arm with a thick rope around the wrist. The image symbolizes compression injury in Cheiralgia paraesthetica, also known as handcuff neuropathy. — Tight objects like wristbands, bracelets, or handcuffs can compress the superficial branch of the radial nerve—a common cause of Cheiralgia paraesthetica.

Less commonly, irritation may result from scarring, inflammation, or direct trauma to the nerve area.

What are the typical symptoms?

Cheiralgia paraesthetica primarily causes sensory symptoms—meaning it affects feeling, not movement. These typically occur on the thumb side of the back of the hand and may include:

Tingling or “pins and needles” on the dorsal thumb, index, and middle finger
Numbness or reduced sensitivity on the back of the hand
Burning or stabbing discomfort, especially when touching or pressing the wrist
Occasionally, increased sensitivity to light touch (allodynia)

Schematic illustration of the back of the right hand showing numbness in Cheiralgia paraesthetica. The affected area is located over the metacarpals of the thumb, index, and middle fingers. — Cheiralgia paraesthetica may cause numbness over the metacarpal region of the thumb, index, and middle fingers—where the superficial branch of the radial nerve runs close to the skin.

Importantly, motor function remains unaffected, as the superficial radial nerve does not control any muscles.

How is it diagnosed?

Diagnosis is typically based on the description of symptoms and a physical examination. The specific location of the numbness or tingling helps to distinguish this condition from other nerve issues. A physician may gently palpate the superficial radial nerve to check for tenderness or localized symptoms.

The role of high-resolution nerve ultrasound

High-resolution ultrasound can be a helpful tool in confirming the diagnosis. This method allows for a pain-free, detailed visualization of the nerve just under the skin. It can reveal subtle nerve changes, such as thickening, narrowing, or signs of irritation caused by surrounding structures like scar tissue, vessels, or tendons.

With modern high-frequency probes, the superficial branch of the radial nerve can often be visualized clearly. This can assist in identifying the exact point of irritation and ruling out other conditions by comparing both sides.

Illustration of an ultra-high-resolution ultrasound probe showing a nerve fascicle. — High-Resolution Nerve Imaging Using a 24 MHz Matrix Probe – for Fine Structural Detail.

Ultrasound provides valuable additional information and can help guide further decisions—especially in unclear cases.

Do nerve conduction studies help?

Unlike deeper nerve lesions, standard nerve conduction studies (NCS) are often less informative in Cheiralgia paraesthetica. The superficial nerve branch is very short and close to the skin, making it difficult to detect mild changes. As a result, clinical examination and ultrasound imaging are often more helpful in confirming the diagnosis.

llustration of the electrodes used for nerve conduction studies (neurography / NCS / ENG). — Nerve conduction studies (neurography) are performed using a stimulation electrode and adhesive skin electrodes.

Differential diagnoses – What else could it be?

Several other nerve conditions may cause similar symptoms. A precise diagnosis is important to avoid confusion or misinterpretation.

A thorough evaluation by a medical professional is essential to clarify the cause.

What can be done?

A medical consultation should always be the first step. Depending on the underlying cause, treatment may range from simple pressure relief to further testing or intervention.

In many cases, it is enough to remove or avoid pressure on the wrist, such as by loosening a tight wristband or adjusting equipment. If nerve swelling, inflammation, or persistent symptoms are identified, individualized assessment is necessary to determine the next steps.

Summary

Cheiralgia paraesthetica, or handcuff neuropathy, is a localized and usually mild nerve irritation affecting the back of the hand. It results from compression of the superficial radial nerve, often due to tight wristbands, trauma, or prolonged pressure. Symptoms include tingling, numbness, or burning, without motor weakness.

High-resolution ultrasound can provide detailed insight into the affected nerve and assist in ruling out other conditions. A professional evaluation is important for accurate diagnosis and to decide whether additional steps are necessary.

Disclaimer: The information provided on this page is for general informational purposes only and does not constitute medical advice. It is not a substitute for personal consultation, examination, or treatment by a physician or other qualified healthcare professional. No guarantees of healing or cure are made. While we strive for accuracy and completeness, we cannot guarantee that all content is up to date or free from errors, and we accept no liability for any inaccuracies.