What Causes Finger Pain?

Finger pain is a subjective sensation that may originate from pathological changes in structures comprising the finger joints—such as bones, joints, tendons, and bursae—or may be referred pain arising from lesions outside the hand. The hand primarily performs intricate and precise movements through coordinated action of the metacarpophalangeal (MCP) and interphalangeal (IP) joints, under neural control and with supportive adjustment from the wrist joint; these movements are powered by both intrinsic and extrinsic hand muscles. So, what causes finger pain? Below we address this question.

Causes of Finger Pain

1. Bone and Joint Injuries

Examples include fractures of the metacarpal or phalangeal bones; dislocations of the MCP or IP joints; and injuries to the collateral ligaments of the MCP joint. Tendon and tendon sheath injuries can also cause finger pain—for instance, rupture of the extensor tendon insertion or avulsion fracture leading to mallet finger; central slip rupture of the extensor tendon resulting in dorsal prominence of the proximal interphalangeal (PIP) joint and “boutonnière” deformity; or traumatic lacerations or injuries to the extensor tendons, superficial flexor tendons, or deep flexor tendons. Patients diagnosed with tenosynovitis should rest adequately and minimize weight-bearing activities involving the fingers and wrists.

2. Palmar Fascial Contracture (Dupuytren’s Contracture)

This condition involves nodular thickening and contracture of the palmar fascia. Approximately 60–70% of cases demonstrate a clear genetic predisposition. The pathology affects the palmar fascia and may extend into the digital fascia, causing contractures of the MCP and IP joints. Additionally, hand infections—including paronychia, felon (suppurative pulp infection), cellulitis of the fingertip, infectious tenosynovitis, web-space infection, mid-palm space infection, and thenar space infection—can all lead to finger pain. Local heat application may be beneficial; anti-inflammatory, analgesic, and blood-activating, meridian-regulating medications may also help alleviate symptoms.

3. Osteoarthritis

This is the most common cause of finger joint pain, typically resulting from tissue degeneration and cumulative microtrauma. It predominantly affects overweight or obese middle-aged and elderly individuals. Commonly involved sites include the knees, fingers, cervical spine, and lumbar spine. Primary symptoms include joint pain and stiffness; severe cases may present with joint swelling and muscle atrophy. Moreover, hand sprains—such as those occurring during sports or heavy lifting—can also cause finger pain. Therefore, patients are advised to ensure adequate rest.

The above outlines the main causes of finger pain. We hope this information is helpful to you.