Cold hands and feet in winter are usually normal: your body narrows the blood vessels in your fingers and toes to keep your core warm. It becomes a health question when your hands stay cold even in a warm room, when fingers turn white or blue, or when coldness comes with numbness, sores, tiredness or leg pain, because then Raynaud’s, an underactive thyroid, diabetes-related nerve or artery problems, or smoking damage may be behind it.
Here’s how to tell the difference, which tests are worth asking for, and the signs that need a doctor soon.
Why your hands and feet get cold first
Your heart, brain and other organs need a steady temperature. When you’re in the cold, the body protects them by cutting blood flow to the skin of your hands and feet. Cleveland Clinic describes it simply: your body restricts blood flow to your hands to protect your organs in a cold environment.
Stress and anxiety trigger the same narrowing, which is why some people get icy hands before an interview. Caffeine and nicotine can add to it.
Normal winter coldness has a pattern. It happens when you’re actually cold (an early morning scooter ride, a marble floor, a cold office), both hands or both feet are affected equally, and the skin warms up and returns to its usual colour within a few minutes once you’re inside or holding a cup of tea.
Signs it’s more than the weather
Pay attention if:
- Your hands or feet feel cold all the time, even in a warm room
- Fingers or toes change colour, turning white, then blue, then red
- Only one hand, one foot or one side is affected
- You get numbness, tingling or burning in the feet
- Small cuts or cracks on fingers or toes don’t heal
- The coldness came with new tiredness, weight gain, breathlessness or leg pain on walking
Each of these points to a different cause. The main ones are below.
Raynaud’s: fingers that turn white or blue
In Raynaud’s, the small blood vessels in the fingers and toes over-react to cold or stress. According to the NHS, fingers and toes may turn white, blue or red, with pain, numbness or pins and needles. Ears, nose and lips can be affected too. An attack can last from a few minutes to a few hours.
For many people Raynaud’s is a nuisance rather than a disease, but it is sometimes caused by another condition, by certain medicines, or by years of using vibrating tools. The NHS advises seeing a doctor if:
- Symptoms are severe, getting worse or affecting daily life
- Only one side of the body is affected
- You also have joint pain, skin rashes or muscle weakness
- You’re over 30 and getting it for the first time
- A child under 12 has symptoms
Those last points matter because Raynaud’s that starts later in life can be linked to autoimmune conditions such as lupus, rheumatoid arthritis or scleroderma, which a doctor can test for.
Underactive thyroid: feeling cold all over
Your thyroid hormone sets the pace of your metabolism. When the gland is underactive (hypothyroidism), the NHS lists “feeling cold more than usual” among the symptoms, along with tiredness, weight gain, constipation, low mood, dry skin or hair, a hoarse voice and heavy or irregular periods.
The clue here is that you feel cold all over rather than only in your fingers, and that it comes with several of these other changes. It’s diagnosed with a simple blood test for TSH and T4. Hyperthyroidism is the opposite (feeling hot, sweaty, a racing heart). If you’re curious how that looks, see our article on overactive thyroid symptoms in women.
Anaemia: more about tiredness and breathlessness
Iron deficiency anaemia is common, especially in women, and many people blame it for cold hands. The evidence is less tidy. Cleveland Clinic notes that cold hands aren’t usually a direct symptom of anaemia, although it can affect blood flow. The NHS lists the main symptoms as tiredness, breathlessness, palpitations, headaches and paler skin than usual.
So if you have cold hands plus constant tiredness, heavy periods, or getting breathless on stairs, a full blood count (CBC) is worth doing. If your hands are cold but you feel otherwise well, anaemia is a less likely explanation.
Diabetes: nerve damage and narrowed arteries
Diabetes affects the feet in two ways, and both can make feet feel cold or “dead”.
Nerve damage (peripheral neuropathy). The NIDDK describes burning, tingling, numbness, pain or weakness in the feet, legs, hands or arms, and problems sensing pain or temperature. That last part is a real danger in winter. If you can’t feel heat properly, a hot water bag, heater or bucket of hot water can burn your feet without you noticing. Test bath water with your elbow, not your foot.
Peripheral arterial disease (PAD). Fatty deposits narrow the arteries to the legs. The NHS lists leg pain when walking that eases after a few minutes’ rest, hair loss on the legs and feet, shiny skin, slow-growing toenails and foot sores that don’t heal. In advanced disease, toes can become cold, numb and discoloured. Smoking, diabetes, high blood pressure, high cholesterol and older age are the main risk factors.
If you have diabetes, check your feet every day for cuts, cracks and colour changes. Our article on cracked heels and the diabetes warning signs explains why a small crack can become a big problem, and our diabetes overview covers the regular checks you should be getting.
Smoking and other causes
The NHS calls smoking “the most significant risk factor” for PAD, and stopping smoking is one of its first self-help steps for Raynaud’s because it improves circulation. Beedis and chewing tobacco count too, since they also deliver nicotine.
Other things worth mentioning to your doctor: any regular medicines (the NHS notes some can trigger Raynaud’s), and long hours with vibrating tools.
Tests to ask your doctor about
You don’t need every test. Your doctor will choose based on your symptoms, but these are the usual ones:
| Suspected cause | Test | What it shows |
|---|---|---|
| Underactive thyroid | TSH and T4 blood test | High TSH with low T4 suggests hypothyroidism |
| Anaemia | Complete blood count (CBC), sometimes ferritin | Low haemoglobin; ferritin shows iron stores |
| Diabetes | Fasting sugar and HbA1c | Whether blood sugar is high, and how well it’s controlled |
| Diabetic nerve damage | Foot exam with a monofilament and tuning fork | Loss of light touch or vibration sense in the feet |
| PAD | Ankle brachial pressure index (ABPI) | Compares blood pressure at the ankle and arm; a gap suggests narrowed arteries |
| Secondary Raynaud’s | Blood tests for autoimmune disease, if there are joint pains, rashes or weakness | Signs of conditions such as lupus or rheumatoid arthritis |
What helps day to day
- Keep your whole body warm, including your chest and head. A thermal layer, socks and a cap help your body stop rationing blood to your fingers.
- Avoid sudden temperature swings, like stepping from a warm room into cold water. The NHS suggests this for Raynaud’s.
- Stop smoking and cut down on caffeine if colour changes are a problem.
- Move. The NHS lists regular exercise among the self-help steps for Raynaud’s.
- Warm drinks and hot meals help you feel warmer. Our list of winter foods and drinks that warm you up has ideas, though food won’t fix a circulation problem.
- If your feet are numb, skip hot water bags and heaters close to your feet.
When to see a doctor
Book an appointment soon if you have:
- Fingers or toes that regularly turn white or blue, especially if this started after 30
- Cold hands or feet all the time, even in warm weather
- Symptoms on one side only
- Numbness, tingling or burning in the feet, particularly with diabetes
- Calf or thigh pain on walking that goes away with rest
- Cold hands along with tiredness, weight gain, breathlessness or heavy periods
Get help the same day, or go to hospital, if you notice:
- A sore, ulcer or wound on a finger or toe that isn’t healing
- A finger, toe or foot that turns dark, black or very pale and stays that way
- Severe foot or leg pain at rest, especially at night
- A leg or arm that suddenly becomes cold, pale, painful and weak (call 112, as this can mean a blocked artery)
Frequently asked questions
Are cold hands a sign of poor circulation?
Not usually. In most people cold hands are the body’s normal response to cold. Poor circulation is more likely if there’s colour change, slow-healing sores, pain on walking or coldness on one side only.
Can vitamin deficiency cause cold hands and feet?
Iron deficiency can contribute through anaemia, though its main symptoms are tiredness and breathlessness. Vitamin B12 deficiency can affect the nerves and cause numbness or pins and needles. A blood test is better than guessing and taking supplements.
Why are my feet cold but my body is warm at night?
Feet are furthest from the heart and often uncovered or on a cold floor. Wearing socks to bed is fine. If your feet are cold and numb, or you have diabetes, get them checked.
Is Raynaud’s dangerous?
Raynaud’s on its own is usually harmless, though uncomfortable. It needs a check-up if it starts after 30, affects one side, causes sores, or comes with joint pain, rashes or muscle weakness.
Do cold hands mean thyroid problems?
Only sometimes. An underactive thyroid makes you feel cold all over and usually brings other symptoms like tiredness, weight gain and constipation. A TSH test will answer the question.
This article is for general information and is not a substitute for advice from a doctor. If you have symptoms or a health condition, please consult a qualified healthcare professional.