8  Flu Shot Side Effects You Should Know About 

Joint Pain 

While rare, some individuals may experience discomfort or pain in their joints post-flu shot, which is generally mild and temporary. 

Itching 

Skin irritation or itching at the injection site can happen due to the body's response to the vaccine components. This is usually brief and resolves on its own. 

Dizziness 

Rare instances of dizziness or lightheadedness may occur, often linked to anxiety or a temporary drop in blood pressure. 

Malaise 

A general sense of discomfort might be felt, especially in those with robust immune responses as the body mounts defenses against the inactivated virus  

Gastrointestinal  

Some people might experience minor digestive issues like diarrhea or abdominal pain, but these are infrequent and short-lived. 

Runny Nose 

The immune response stimulated by the vaccine can sometimes mimic mild cold symptoms, such as a runny nose or congestion. 

Bruising 

Bruising at the injection site is rare and may result from the needle puncture or applying pressure. 

Changes in sleep patterns might occur due to the body's response to the vaccine, but this is generally temporary. 

Sleep Disturbances 

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