Raynaud's Phenomenon: What You Need to Know
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Have you ever noticed your fingers or toes turning white and feeling numb in the cold? While it might be a normal reaction to chilly weather for some, it can also be a sign of a condition called Raynaud's phenomenon.
We speak to Mohammad Hassaan Khan, M.D., a rheumatologist at INTEGRIS Health Medical Group Rheumatology, to learn more.
"If you're experiencing symptoms like your fingers turning white, a rheumatologist can help with a medical evaluation to determine whether you have Raynaud's phenomenon and discuss treatment options," Dr. Khan says. "Red flags to look out for include one-sided symptoms, severe pain, ulcers or sores on the fingertips, skin that doesn't quickly regain color or symptoms that start later in adulthood."
Raynaud's phenomenon vs. Raynaud's disease: What's the difference?
You may hear the terms "Raynaud's disease" and "Raynaud's phenomenon" used interchangeably, but they mean slightly different things. Doctors today prefer the term "Raynaud's phenomenon" as the umbrella term for this condition. It comes in two forms:
- Primary Raynaud's phenomenon (sometimes still called "Raynaud's disease") occurs on its own, without any underlying medical condition. This is the most common form, accounting for about 80–90% of cases. It typically begins between the ages of 15 and 30, tends to be milder, and does not cause permanent tissue damage.
- Secondary Raynaud's phenomenon develops as a result of another health condition — most commonly autoimmune diseases like scleroderma (systemic sclerosis) or lupus. It can also be triggered by certain medications, occupational exposures (such as vibrating tools) or other vascular conditions. Secondary Raynaud's usually appears after age 30–40, tends to be more severe, and in some cases, can lead to serious complications like skin ulcers or tissue damage.
The distinction matters because secondary Raynaud's may require more aggressive treatment and closer monitoring for underlying conditions.
What causes Raynaud's phenomenon?
Raynaud's phenomenon occurs when small blood vessels in the fingers and toes overreact to cold temperatures or emotional stress by narrowing dramatically. This temporary narrowing (called vasospasm) reduces blood flow to the affected areas, causing characteristic color changes and sensations.
- Women are more likely than men to develop Raynaud's phenomenon.
- About 30–50% of people with primary Raynaud's have a close family member with the condition, suggesting a genetic component.
- The condition affects an estimated 3–5% of the general population.
Common symptoms
Raynaud's episodes are typically triggered by cold temperatures or emotional stress and can last anywhere from a few minutes to over an hour. A typical episode lasts about 15 minutes after the trigger has ended.
- Color changes: During an episode, the affected fingers or toes typically turn white (from lack of blood flow), then blue (as trapped blood loses oxygen), and finally, red (as blood flow returns). Not everyone experiences all three color changes — at minimum, white and blue changes are usually present.
- Cold sensation: The affected fingers or toes feel unusually cold to the touch because of reduced blood flow. This is often one of the first things people notice.
- Numbness and tingling: A "pins and needles" feeling often occurs in the affected areas, similar to the sensation when a limb "falls asleep." As blood flow returns, tingling may briefly intensify before fading.
- Common triggers include reaching into a freezer, holding a cold drink, being in an air-conditioned room or experiencing emotional stress. Keeping a symptom diary can help identify personal triggers.
When to see a doctor
Most people with primary Raynaud's phenomenon can manage their symptoms with simple lifestyle changes. However, it is important to see a doctor — especially a rheumatologist — if you experience:
- Symptoms that begin after age 30
- Symptoms affecting only one hand or one side of the body
- Severe pain during episodes
- Sores or ulcers on the fingertips
- Skin that is slow to regain its normal color
- Joint pain, skin changes or other new symptoms
These could be signs of secondary Raynaud's phenomenon, which may indicate an underlying condition that needs treatment.
How is Raynaud's phenomenon treated?
Treatment focuses on reducing the number and severity of episodes and preventing complications. The approach depends on whether you have primary or secondary Raynaud's.
Lifestyle changes (recommended for everyone with Raynaud's):
- Dress in layers and wear warm gloves and socks, especially in cold weather.
- Avoid sudden temperature changes (for example, reaching into a freezer without gloves).
- Quit smoking — nicotine causes blood vessels to constrict and worsens symptoms.
- Practice stress-management techniques such as deep breathing, mindfulness or yoga.
- Review your medications with your doctor, as some drugs (including certain migraine medications, beta-blockers and ADHD medications) can worsen symptoms.
Medications:
- Calcium channel blockers (such as nifedipine) are the most commonly prescribed medications. They help relax and widen small blood vessels, improving circulation and reducing the frequency and severity of episodes.
- Other vasodilators may be considered if calcium channel blockers are not effective or not tolerated.
- For secondary Raynaud's with digital ulcers, additional medications such as phosphodiesterase-5 inhibitors may be used.
- Your doctor may adjust medication doses seasonally, as symptoms are often worse in winter.
Topical treatments:
- Creams containing nitrates can be applied to the affected fingers or toes to help widen blood vessels locally. These are typically used for milder cases or alongside other treatments.
Surgical options:
- Surgery is reserved for severe cases — particularly secondary Raynaud's — where other treatments have not worked and there is a risk of tissue damage. A procedure called a sympathectomy may be performed to interrupt the nerves that control blood vessel constriction in the hands or feet. This option carries risks and is not appropriate for everyone.
The bottom line
“Raynaud's phenomenon is common and, in its primary form, usually manageable with simple precautions,” Dr. Khan says. “However, if symptoms are severe, start later in life or are accompanied by other concerning signs, it is important to see a doctor to rule out an underlying condition. A rheumatologist can help determine whether further evaluation or treatment is needed.”
Next steps: If you are experiencing symptoms of Raynaud’s phenomenon, it’s important to talk to a healthcare professional. A proper diagnosis can help you understand your condition and find the most effective ways to manage it. The team at INTEGRIS Health is here to provide expert care and support. Find a doctor now.
This article was medically reviewed by Mohammad Hassaan Khan, M.D. Our health and wellness experts regularly review new research and update our articles to reflect the most current, evidence-based information.
