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Leg cramps — sudden, painful muscle tightening, usually in the calf — are common in pregnancy, especially at night and in the later stages. The exact cause isn't fully understood, but changes in circulation, added weight, and pressure on nerves and blood vessels from the growing uterus are thought to contribute.
Evidence checked against current HSE guidance for Leg cramps during pregnancy, covering the article's core clinical information and relevant assessment, management or safety considerations.
Public health education article
Stretching before bed can help prevent cramps — A gentle calf stretch before bed is one of the most commonly recommended and effective ways to reduce the frequency of night-time leg cramps in pregnancy.
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Leg cramps — sudden, painful muscle tightening, usually in the calf — are common in pregnancy, especially at night and in the later stages. The exact cause isn't fully understood, but changes in circulation, added weight, and pressure on nerves and blood vessels from the growing uterus are thought to contribute.
Topic-specific prevention and risk reduction will be added during the article-specific evidence audit.
Cramping is accompanied by swelling, redness, or warmth in one leg (possible signs of a blood clot)
Leg cramps — sudden, painful muscle tightening, usually in the calf — are common in pregnancy, especially at night and in the later stages. The exact cause isn't fully understood, but changes in circulation, added weight, and pressure on nerves and blood vessels from the growing uterus are thought to contribute.
While uncomfortable, especially when they wake you at night, cramps aren't harmful and usually resolve after birth.
A gentle calf stretch before bed is one of the most commonly recommended and effective ways to reduce the frequency of night-time leg cramps in pregnancy.
While most leg cramps are harmless, persistent pain, swelling, or redness in one leg should be checked promptly, as pregnancy increases the risk of blood clots.
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BarnMD Health Library provides general health education for public health literacy. Reading this article does not establish a doctor-patient relationship and this information is not a diagnosis, prescription, or personalised treatment plan. If you have symptoms or concerns about your health, seek appropriate advice from a qualified healthcare professional. If you develop emergency warning signs, seek urgent or emergency medical attention.
Leg cramps are a common, if uncomfortable, part of pregnancy and usually ease with simple stretching and staying active.
Persistent one-sided swelling or pain should always be checked, since it could indicate a blood clot rather than a simple cramp.