Lifestyle

Fingers Turn White or Blue in the Cold? Signs of Raynaud’s and When It Points to Something Else

By Mike Harper · October 23, 2026

Reaching into the freezer or stepping out on a chilly morning can leave anyone with cold fingers. But if your fingers turn white, then blue, and go numb, you may be having an attack of Raynaud’s phenomenon. For many people it is mild. Sometimes it is a clue to another health problem.

Raynaud’s causes the small blood vessels in the hands and feet to narrow and restrict blood flow. The National Institute of Arthritis and Musculoskeletal and Skin Diseases says attacks usually affect the fingers and toes and are usually set off by cold or emotional stress. Grabbing a glass of ice water, taking something out of the freezer, or walking into an air-conditioned store on a warm day can all trigger one.

NIAMS describes how a typical attack unfolds.

Pale or white skin. The affected finger or toe turns pale or white because blood flow is cut off.

Blue, cold and numb. The area then turns blue and feels cold and numb as the blood left in the tissue loses its oxygen.

Red, throbbing or tingling as it warms. When circulation returns, the skin turns red and may swell, tingle, burn or throb. Mayo Clinic says the return of blood flow can take 15 minutes after warming up, and notes that the color changes may be harder or easier to see depending on skin color.

Attacks can start in a single finger and spread to others, and NIAMS says the thumbs are less likely to be affected. An attack may last a few minutes or a few hours. Ears, nose and lips can be involved too.

There are two types. Primary Raynaud’s has no known cause and is the more common form. It is often mild, and NIAMS says it usually starts before age 30, often in the teenage years.

Secondary Raynaud’s is linked to another condition, and it tends to be more serious. Mayo says its symptoms usually appear around age 40, later than the primary form. Causes on Mayo’s and NIAMS’s lists include autoimmune diseases such as lupus, scleroderma, rheumatoid arthritis and Sjogren’s, blood vessel disease, carpal tunnel syndrome, years of using vibrating tools, smoking, and some medicines, including beta blockers for high blood pressure, some migraine drugs, and decongestants with phenylephrine or pseudoephedrine. Don’t stop a prescribed medicine on your own; talk with your doctor.

Because the secondary form tends to start later and can point to another condition, it makes sense to tell your doctor about new attacks. NIAMS says doctors may look at the tiny blood vessels at the base of your fingernails under magnification, a test called nailfold capillaroscopy, and order blood tests such as an ANA test to check for a related disease.

Warmth is the main defense. NIAMS says keeping your whole body warm matters along with your hands and feet, so dress in layers and wear a hat. Wear gloves when handling cold or frozen food, bring a sweater into air-conditioned places, and try heated gloves or hand warmers. To end an attack, run your hands under warm, not hot, water, tuck them under your armpits, or swing your arms in a windmill motion. Quitting smoking helps, since nicotine narrows blood vessels.

Severe cases can lead to painful sores on the fingertips and, rarely, gangrene. Mayo says to see your health care provider right away if you have a history of severe Raynaud’s and develop a sore or infection on an affected finger or toe.

This article is for general information and is not medical advice. Talk with your doctor about any symptoms and before changing your medicines. This article was produced with the assistance of AI and fact-checked against the sources cited by LightWave Reports.