Skin
Pale skin
Skin that looks paler than usual, sometimes with pale lips, gums or inner eyelids, which can simply reflect skin tone or cold, but can also signal anaemia or other conditions — and which when sudden, with breathlessness or collapse, is a medical emergency.
Education and reference only. This explains the common causes of pale skin and the warning signs that need urgent help, in plain language — it is not a diagnosis or a substitute for advice from a clinician. If you feel very unwell or are worried, seek medical help.
Quick answer
What is pale skin?
Pale skin can be a normal feature of someone's natural colouring, or a brief response to cold, fear or feeling faint, but persistent or new pallor can be a useful sign that the blood is short of healthy red cells or that blood is not reaching the skin properly. Because skin colour varies so much between people, the most reliable places to judge pallor are the lips, the gums, the tongue and the inside of the lower eyelids, which look pale when the blood is thin.
- Get urgent help: Call 999 if pallor comes on suddenly with breathlessness, chest pain, a fast or pounding heartbeat, sweating or collapse — this can mean serious blood loss or shock. Seek emergency help for sudden pallor with fast or laboured breathing and drowsiness in a child, who can become unwell quickly.
- Self-care: Pallor is a sign rather than a condition in itself, so self-care centres on supporting general health while the cause is checked.
About pale skin
Pale skin can be a normal feature of someone's natural colouring, or a brief response to cold, fear or feeling faint, but persistent or new pallor can be a useful sign that the blood is short of healthy red cells or that blood is not reaching the skin properly. Because skin colour varies so much between people, the most reliable places to judge pallor are the lips, the gums, the tongue and the inside of the lower eyelids, which look pale when the blood is thin. The commonest cause is anaemia — too few healthy red cells, often from low iron — which also brings tiredness, breathlessness on effort and a fast heartbeat. Long-term conditions such as reduced kidney function or an underactive thyroid can cause a sallow pallor, and inherited blood disorders cause pallor too. Most pallor builds up slowly and is investigated calmly, but sudden pallor with breathlessness, chest pain, a racing heart or collapse can mean serious blood loss or shock and is an emergency.
When to get help
Call 999 or go to A&E if pale skin comes with any of these warning signs:
- Call 999 if pallor comes on suddenly with breathlessness, chest pain, a fast or pounding heartbeat, sweating or collapse — this can mean serious blood loss or shock.
- Seek emergency help for sudden pallor with fast or laboured breathing and drowsiness in a child, who can become unwell quickly.
- Seek urgent help for pallor with black, tarry stools, vomiting blood, or very heavy bleeding, which point to significant blood loss.
- Seek urgent help for pallor with easy bruising, bleeding gums or many small red or purple spots on the skin, which can mean a blood problem.
- See a doctor promptly for new, persistent pallor with marked tiredness and breathlessness on effort so anaemia can be checked.
When to see a doctor
Sudden pallor with breathlessness, chest pain, a racing heart, sweating or collapse is an emergency — call 999, as it can mean serious blood loss or shock. Seek urgent help for pallor with signs of bleeding, such as black stools or vomiting blood, or with easy bruising and bleeding. For pallor that has come on gradually, especially with tiredness, breathlessness on effort or a fast heartbeat, book an appointment so a simple blood test can check for anaemia and look for the underlying cause, such as heavy periods or a problem absorbing iron.
Not sure how urgent it is? It is always OK to call NHS 111 for advice, day or night.
What can cause it
Common causes of pale skin
Pale skin has many possible causes. Each links to a full, plain-language guide to that condition — what it is, how it's treated and when to seek help.
What helps
Self-care and what you can do
Pallor is a sign rather than a condition in itself, so self-care centres on supporting general health while the cause is checked. A varied diet that includes good sources of iron — such as lean red meat, beans, lentils, leafy greens and fortified cereals — supports healthy red cells, and pairing plant sources of iron with vitamin C-rich foods can help absorption. Keep warm if cold makes you look pale, rise slowly from sitting or lying if you feel light-headed, and pace activities if you tire easily. It is important not to self-treat suspected anaemia with supplements without advice, as the underlying cause still needs finding. Note any other symptoms, such as heavy periods, tiredness or changes in your bowel habit, to share with your clinician.
Answers
Pale skin: frequently asked questions
Does looking pale always mean I am anaemic?
No. Skin colour varies a lot between people, and pallor can come from cold, fear or feeling faint. But new or persistent pallor, especially with tiredness, breathlessness on effort or a fast heartbeat, can mean anaemia and is worth a simple blood test.
Where is the best place to check for pallor?
Because outer skin tone varies so much, the most reliable places to look are the lips, gums, tongue and the inside of the lower eyelids. When the blood is thin from anaemia, these tend to look paler than usual.
When is sudden pallor an emergency?
Treat it as a 999 emergency if pallor comes on suddenly with breathlessness, chest pain, a fast or pounding heartbeat, sweating or collapse, or with heavy bleeding, black stools or vomiting blood. These can mean serious blood loss or shock.
Should I take iron tablets if I look pale?
Not without advice. Self-treating with iron can mask the real problem and is not always the right answer, since pallor has several possible causes. See a clinician so the cause can be found before any treatment is started.
Sources
Where this is drawn from
- NICE CKS: Anaemia - iron deficiency.
- British Society for Haematology.
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