Is It Normal to Get a Big Lump After an Injection?
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5 min read
According to the Centers for Disease Control and Prevention (CDC), mild side effects like soreness, swelling, or redness at the injection site are common after many injections and vaccinations. While a noticeable lump can be alarming, it's often a normal part of the body's healing process and immune response. This guide explains why you might develop a lump, how to care for it, and the signs that indicate a more serious issue.