Injection safety: when to contact your healthcare provider

Injections may cause side effects. Some are mild and usually go away, while others are more serious. It is important to recognize the warning signs of a more serious problem.

Most injections can cause some mild side effects, including mild bruising at the injection site, pain just after injection, and mild swelling and irritation around the injection site.

Other symptoms may be a sign of a more serious problem. Contact your healthcare professional if you notice any of the following:

  • swelling, warmth, redness, and discharge around the injection site
  • lumps, hollow areas, firm knots, discolouration, or pain around the injection site
  • skin rash found not just at the injection site, but at different sites on the body
  • hives, swelling of the face or throat, or difficulty breathing

You should also contact your health professional if you have any other concerns about MS or any of your medications, for example if you:

  • miss a dose of your medication
  • are unsure of how to give the injection
  • become anxious about giving the injection
  • notice any symptom not listed here that worries you

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