What could a painful lump on my wrist indicate?

Q: What could a painful lump on my wrist indicate?

A painful lump on your wrist is most often a **ganglion cyst**, a common fluid-filled bump that forms near joints or tendons. Ganglion cysts typically appear on the back or front of the wrist and can range from pea-sized to about an inch across. While often harmless, they may cause pain, tingling, or weakness if they press on nearby nerves. Other possible causes of a painful wrist lump include lipomas (fatty growths), tendon sheath tumors, bone spurs, or, less commonly, infections or inflammatory conditions like rheumatoid arthritis. Because wrist lumps can have many causes, and treatment varies widely, it's important to identify what's behind yours. Take a free, instant, online symptom check to get personalized insights and clear next steps in minutes—no signup required. Reviewed for medical accuracy: 07/20/2026

Reviewed by Yoshinori Abe, MD

Internal Medicine

A painful lump on your wrist is most often a ganglion cyst, a common fluid-filled bump that forms near joints or tendons. Ganglion cysts typically appear on the back or front of the wrist and can range from pea-sized to about an inch across. While often harmless, they may cause pain, tingling, or weakness if they press on nearby nerves.

Other possible causes of a painful wrist lump include lipomas (fatty growths), tendon sheath tumors, bone spurs, or, less commonly, infections or inflammatory conditions like rheumatoid arthritis.

Because wrist lumps can have many causes, and treatment varies widely, it's important to identify what's behind yours. Take a free, instant, online symptom check to get personalized insights and clear next steps in minutes—no signup required.

Reviewed for medical accuracy: 07/20/2026

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Explanation

A painful lump on your wrist might be a ganglion cyst. These cysts are common and usually form near joints or tendons in the hand or wrist. They are filled with a jelly-like fluid and can vary in size. While they are not cancerous, they can cause discomfort or pain, especially if they press on nearby nerves.

Here are some important points about ganglion cysts:

Appearance: They often look like a smooth, round bump under the skin.
Symptoms: Besides pain, you might notice changes in size, and sometimes they can limit movement in the wrist.
Causes: The exact cause is unknown, but they are linked to joint or tendon irritation.

If you suspect you have a ganglion cyst, you can use our free AI symptom checker to help identify your symptoms and understand what might be causing them. A healthcare provider can confirm the diagnosis and discuss treatment options if needed. In some cases, the cyst may go away on its own, but if it causes pain or limits movement, medical treatment might be necessary.

(References)

Gregush RE, & Habusta SF. (2025). Ganglion Cyst. Unknown Journal, 29262133.
Peters F, Vranceanu AM, Elbon M, & Ring D. (2013). Ganglions of the hand and wrist: determinants of treatment .... The Journal of hand surgery, European volume, 22508801.
Rathi BK, Vikhe CS, Ramteke SU, & Jaiswal PR. (2024). Physiotherapy Rehabilitation of Scapholunate Ligament .... Cureus, 39350849.

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