What a Sudden Lump on Your Wrist May Mean

Finding a new lump on your wrist can feel worrying, especially if it appears suddenly.

Other possible causes include a soft fatty lump called a lipoma, a bone spur, swelling linked to arthritis, or an infection. Rarely, a lump may need further testing to rule out something more serious. The article also notes that redness, warmth, fever, numbness, weakness, or fast growth should be checked quickly.

Doctors usually examine the lump and may order an X-ray, ultrasound, or MRI. Sometimes fluid may be removed with a needle to confirm the cause.

Many painless ganglion cysts do not need treatment and can simply be watched. AAOS says observation is often safe because ganglion cysts are not cancerous and may disappear on their own.

Do not try to squeeze, pop, or drain a wrist lump at home. If it hurts, grows, limits movement, or causes numbness, it is best to get medical advice.