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Raynaud's Phenomenon
The small blood vessels in the fingers and toes over-tighten in response to cold or stress, causing them to turn white, then blue, then red. Most cases are mild.
Causes & risk factors
- Cold exposure or emotional stress
- Often no underlying cause (primary type)
- Connective tissue diseases (secondary type)
- Smoking
- Certain medicines and vibrating tools
Common symptoms
- Fingers or toes turning white then blue in cold
- Numbness or tingling
- Cold, pale fingers and toes
- Redness and throbbing on warming
- Sores on fingertips (severe cases)
Tests & diagnosis
- Physical examination
- Nailfold capillaroscopy
- ESR
- Blood tests (to check for other conditions)
Treatment & management
- Keep hands and feet warm and wear gloves
- Stop smoking
- Manage stress
- Medicines to relax blood vessels for frequent attacks
- Treating any underlying connective tissue disease
When to see a doctor urgently
- See a doctor for sores or ulcers on the fingertips
- Seek assessment if attacks are severe, one-sided or start later in life
- Get checked if you also have joint pains or skin changes
Not a diagnosis. MedDroid gives general educational information about raynaud's phenomenon. It cannot examine you, diagnose or prescribe — always confirm with a qualified doctor.
Frequently asked questions
Is Raynaud's dangerous?
The common (primary) type is usually mild and harmless; the secondary type linked to other diseases can be more serious and needs assessment.
How can I reduce attacks?
Keep warm, avoid sudden cold, stop smoking and manage stress; medicines help for frequent attacks.
Explore more
Sources & further reading
- World Health Organization (WHO)
- MedlinePlus — U.S. National Library of Medicine
- Ministry of Health & Family Welfare, India
- Indian Council of Medical Research (ICMR)
Reviewed by Dr. Sanjay Anbu, MBBS. MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.