Nerves
Numbness and tingling
Numbness and tingling happen when a nerve is irritated, compressed or not working properly, and while often harmless, sudden symptoms on one side of the body can be a sign of stroke.
Education and reference only. This explains the common causes of numbness and tingling 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 numbness and tingling?
Numbness and tingling, often described as pins and needles, occur when the normal signals carried by nerves are disturbed. Many of us have felt a temporary version after sitting awkwardly or leaning on an arm, which quickly settles once we move.
- Get urgent help: Sudden numbness or weakness of the face, arm or leg, especially on one side of the body, or with slurred speech or vision problems, can be a stroke — call 999 immediately and remember FAST (Face, Arms, Speech, Time). Numbness around the back passage or genitals with difficulty controlling your bladder or bowels can signal a serious spinal problem (cauda equina) — go to A&E urgently.
- Self-care: For brief pins and needles caused by pressure on a nerve, such as a leg going to sleep, simply changing position and moving the limb usually restores normal feeling within minutes.
About numbness and tingling
Numbness and tingling, often described as pins and needles, occur when the normal signals carried by nerves are disturbed. Many of us have felt a temporary version after sitting awkwardly or leaning on an arm, which quickly settles once we move. More persistent symptoms can come from a trapped or compressed nerve, conditions affecting the nerves themselves, or problems in the spine. While most causes are not dangerous, the pattern and speed of onset matter a great deal. Symptoms that come on suddenly, affect one side of the face, arm or leg, or are linked with difficulty speaking or seeing can be a sign of a stroke, which is a medical emergency. Numbness around the back passage or genitals, especially with bladder or bowel problems, can signal a serious spinal problem. Knowing these warning patterns helps you act quickly when it matters.
When to get help
Call 999 or go to A&E if numbness and tingling comes with any of these warning signs:
- Sudden numbness or weakness of the face, arm or leg, especially on one side of the body, or with slurred speech or vision problems, can be a stroke — call 999 immediately and remember FAST (Face, Arms, Speech, Time).
- Numbness around the back passage or genitals with difficulty controlling your bladder or bowels can signal a serious spinal problem (cauda equina) — go to A&E urgently.
- Numbness that spreads quickly over hours, or affects both legs together with weakness, needs urgent assessment.
- Numbness after a significant head, neck or back injury should be assessed urgently.
- Numbness with severe headache, confusion or loss of consciousness needs emergency care.
When to see a doctor
See a doctor if numbness or tingling persists, keeps returning, or comes on without an obvious cause such as leaning on a limb. Seek advice if the symptoms are spreading, affecting your ability to use your hands or walk, or accompanied by weakness, clumsiness or pain. People with diabetes who notice new numbness in the feet should mention it, as nerve changes can affect foot health. If you are unsure whether your symptoms could be serious, it is always reasonable to get checked, and any sudden one-sided symptoms should prompt an immediate emergency call rather than a wait.
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 numbness and tingling
Numbness and tingling 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
For brief pins and needles caused by pressure on a nerve, such as a leg going to sleep, simply changing position and moving the limb usually restores normal feeling within minutes. If symptoms relate to a repetitive activity or posture, taking regular breaks, adjusting your workstation, and gentle stretching can help. For tingling at the wrist, some people find a wrist support useful, particularly overnight. Keeping active and managing long-term conditions such as diabetes well can help protect the nerves over time. However, persistent, spreading or unexplained numbness should be assessed rather than managed at home, and any sudden symptoms need emergency attention.
Answers
Numbness and tingling: frequently asked questions
Why do I get pins and needles?
Temporary pins and needles usually happen when pressure on a nerve, such as sitting awkwardly, briefly disturbs its signals. It settles when you move. Persistent or unexplained tingling can point to a nerve being compressed or affected by a condition and should be checked.
When is numbness a sign of a stroke?
Sudden numbness or weakness on one side of the face, arm or leg, especially with speech or vision problems, can mean a stroke. Use the FAST test and call 999 immediately, as fast treatment improves outcomes.
Can numbness in the hands at night be serious?
Tingling and numbness in the hand at night, often in the thumb and fingers, is frequently due to a compressed nerve at the wrist. It is usually not dangerous but can be uncomfortable and is worth discussing with a doctor.
What does numbness around the saddle area mean?
Numbness around the back passage or genitals, particularly with bladder or bowel problems and leg weakness, can be a sign of a serious nerve compression in the lower spine. This needs urgent emergency assessment.
Sources
Where this is drawn from
- NICE CKS: Carpal tunnel syndrome.
- Stroke Association
Related symptoms
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