Cheiralgia paresthetica

The radial nerve is susceptible to compression at several points along its course. The term “cheiralgia paresthetica” refers specifically to compression or irritation of the superficial branch of the radial nerve in the forearm. Wartenberg first described this condition in 1932, introduced the term “cheiralgia paresthetica,” and reported on five clinical cases. The condition is also commonly referred to as Wartenberg syndrome or paralysis of the superficial branch of the radial nerve.

Chronic compression syndrome of the radial nerve. The superficial branch of the radial nerve is purely sensory and has no motor component. Therefore, cheiralgia paresthetica manifests as pain, burning, numbness, or paresthesia on the dorsoradial side of the hand, with the first and second fingers frequently affected. The symptoms are often exacerbated by pronation, entrapment, grasping, or repetitive wrist movements, reflecting the dynamic nature of the irritation at the site where the nerve emerges to the surface (Braidwood AS 1975).

Cheiralgia paresthetica (neuropathy of the superficial radial nerve) is considered a rare and often unrecognized focal neuropathy, partly because its symptoms can overlap with those of De Quervain’s tenosynovitis and other causes of pain on the radial side of the wrist.

Cheiralgia paresthetica results from compression, traction, or irritation of the superficial sensory branch of the radial nerve, most commonly in the distal forearm, where the nerve runs subcutaneously near the radial styloid process. Due to its superficial course, the nerve is particularly susceptible to external mechanical forces and repetitive movements (Bumbasirevic M et al. 2016). External compression is a common cause and can result from tight wristbands, wristwatches, handcuffs, casts, splints, or sustained pressure during occupational or recreational activities. Repeated pronation and supination of the wrist, as well as forceful gripping, can exacerbate symptoms by increasing friction or tension at the nerve’s exit point through the deep fascia.

In addition, anatomical variations can predispose individuals to nerve irritation. The position of the superficial branch of the radial nerve in relation to the brachioradialis muscle, the extensor carpi radialis longus muscle, and the tendons of the first dorsal compartment can lead to dynamic compression during wrist movements, particularly in patients with tendon hypertrophy or inflammatory conditions.

Cheiralgia paresthetica is caused by focal compression, traction, or repeated irritation of the superficial sensory branch of the radial nerve, most commonly in the distal forearm, where the nerve penetrates the deep fascia and runs subcutaneously near the styloid process of the radius. Mechanical stress in this superficial transition zone can lead to localized neurapraxia, segmental demyelination, and ischemia, resulting in abnormal afferent signal transmission and neuropathic symptoms such as burning pain, dysesthesia, and paresthesia in the dorsoradial distribution of the hand (Dua A et al. 2026).

Characteristic symptoms include sensory abnormalities in the dorsoradial region of the hand, particularly over the thumb, the first interdigital space, and, in some cases, the index finger. Sensitivity to light touch may be impaired and has been reported in up to 100% of patients.

Two-point discrimination may also be impaired and is typically 4 to 5 mm greater than the value on the contralateral side or exceeds 15 mm. Findings of impaired two-point discrimination have been reported in up to 80% of patients.

Vibration sensation at 256 Hz may be impaired and has been reported in up to 100% of patients.

Furthermore: Paresthesias: tingling, pins-and-needles sensations, or electric-like abnormal sensations.

Dysesthesia: Burning, stinging, or unpleasant sensations upon touch.

Neuropathic pain: Spontaneous or touch-induced pain, sometimes shooting in nature.

Hypoesthesia: Reduced sensitivity to touch and pain in the nerve’s distribution area.

Allodynia: Even light touch, such as from clothing or a wristwatch, can be unpleasant or painful.

Pruritus: Localized neuropathic itching is possible.

Motor function: No motor deficits, as the affected nerve branch is purely sensory.

Treatment for cheiralgia paresthetica is primarily conservative. The initial focus should be on identifying and eliminating external sources of compression—such as watches, straps, splints, and casts—as well as on reducing repetitive mechanical irritation. Patients should be advised to take it easy, avoid movements that trigger symptoms, and modify occupational and recreational activities that exacerbate symptoms. Nonsteroidal anti-inflammatory drugs (NSAIDs) and medications for neuropathic pain may be used as adjunctive therapy, provided this is clinically appropriate.

Surgical intervention is reserved for patients whose symptoms persist despite non-surgical treatment; typically, a sufficient waiting period—often about 6 months—is recommended before surgery.

The prognosis for cheiralgia paresthetica is generally favorable, especially if the cause of the compression or irritation is identified and corrected early on. Since the superficial branch of the radial nerve is purely sensory, the condition does not lead to motor deficits or muscle atrophy, and many patients experience improvement with conservative treatment alone.

The radial nerve arises from the posterior cord of the brachial plexus and contains fibers from C5 through C8, as well as occasionally from T1. The nerve runs downward between the long head of the triceps and the axillary artery, enters the posterior compartment of the arm via the triangular interval, runs along the spiral groove of the humerus, and passes through the lateral intermuscular septum to enter the anterior compartment of the arm before continuing distally toward the elbow and forearm. Approximately 3 to 5 cm proximal to the supinator muscle, the radial nerve branches into the posterior interosseous nerve and the superficial branch of the radial nerve. The posterior interosseous nerve runs deep within the supinator muscle, while the superficial branch runs distally along the anterolateral aspect of the forearm, deep to the brachioradialis muscle and close to the radial artery.

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