Why might I get an injection site reaction after giving myself an MS shot?

Injection site reactions can occur with any shot. While many people tolerate injections without any problems, others can experience redness, bruising and discoloration. It doesn't mean you are doing anything wrong or that you are allergic to the medication. Injection site reactions typically decrease and often disappear altogether as a person stays on the injection therapy.

Bruises or areas of redness often fade or change color as they heal. Itchiness, a lump or discomfort might surround the area.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.