AstraZeneca vaccine side effects: Five signs you may have a blood clot – PHE issues advice

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Nonetheless, Public Health England (PHE) has listed the warning signs of a blood clot and how to respond.

PHE says the following may signal a blood clot has formed:

  • A new, severe headache which is not helped by usual painkillers or is getting worse
  • A headache which seems worse when lying down or bending over

An unusual headache that may be accompanied by:

  • Blurred vision, nausea and vomiting
  • Difficulty with your speech
  • Weakness, drowsiness or seizures
  • New, unexplained pinprick bruising or bleeding
  • Shortness of breath, chest pain, leg swelling or persistent abdominal pain.

If you experience any of the above symptoms from around four days to four weeks after vaccination you should seek medical advice urgently, advises the health body.

How common are AstraZeneca-linked blood clots?

“Although this condition remains extremely rare there appears to be a higher risk in people shortly after the first dose of the AstraZeneca (AZ) vaccine,” explains PHE.

READ MORE: Covid vaccine side effects: What is the most common side effect? How common are they?



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