Why am I dizzy after a flu shot?
Severe Allergic Reactions: In very rare cases, the influenza vaccine can cause severe allergic reactions that usually begin within a few hours after receiving the vaccine. Symptoms can include swelling, hives, breathing difficulties, rapid heart rate, weakness, and dizziness.
Is dizziness a reaction to flu shot?
A novel long-term study of how vaccine-related fears influence flu shot outcomes has found that these fears not only reduce vaccination, but also fuel symptoms of dizziness and lightheadedness at the time of the injection.
How long after flu injection can you get side effects?
Less than 1 in 6 people experience side effects from the flu shot that are similar to the early signs of the flu. These may include fever, tiredness and muscle aches. These side effects can start within a few hours of vaccination and sometimes last for 1 to 2 days.
What are the serious side effects of this year’s flu shot?
Possible side effects of influenza vaccination
pain, redness, swelling or hardness where the needle went in. fever, tiredness, body aches.
How long after flu shot will you have side effects?
Side effects of flu shots
These usually appear soon after the shot and last 1–2 days . They can include: a headache.
How long after flu vaccination do side effects occur?
After your shot, you might have headaches or some achiness and pain in the muscles throughout your body. This also usually happens on the first day and goes away within two days. Taking pain relievers such as ibuprofen can help ease your discomfort. Some people experience dizziness or fainting with the flu shot.
Can you have a delayed reaction to the flu vaccine?
Vaccine-associated anaphylaxis is extremely rare, but the most concerning and life-threatening allergic reaction to vaccines. A typical vaccine-associated anaphylaxis has been known to occur within 30 min after immunization, but delayed-onset anaphylaxis could occur at >4 hours after immunization.