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Doctor insights on: Hives After Flu Shot

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What should you do if you get hives after a flu shot?

What should you do if you get hives after a flu shot?

Flu shot allergy: Take Benadryl (diphenhydramine) to counteract the hypersensivity and relieve the itch. Consult your doctor to ascertain whether it's allergy to the influenza virus or to egg. If you experience trouble with your breathing, rush to the ed. ...Read more

Flu Shot (Definition)

Also known as influenza vaccines, flu shots are given out once a year to protect against the flu. The flu shot stimulates the immune system to build antibodies to three or four strains of flu viruses in the hopes that it will offer protection from the current strains present in the community. Each year the Centers for Disease Control (CDC) monitors the strains of Influenza globally and incorporates the appropriate antigens in the new vaccine. For best protection the vaccine ...Read more


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She got the hives a day after her flu shot. Both her pediatrician and allergist said it's not from the shot (that was the only new thing in her life) one gave her a steroid drink (didn't work) and another gave her some chewing pills (didn't work).?

She got the hives a day after her flu shot.  Both her pediatrician and allergist said it's not from the shot (that was the only new thing in her life) one gave her a steroid drink (didn't work) and another gave her some chewing pills (didn't work).?

Rare but possible: The CDC states "Any medication can cause a severe allergic reaction...estimated at about 1 in a million doses, and would happen within a few minutes to a few hours after the vaccination." Your child (age?) may have had a milder allergic reaction to the vaccine, or something else. Rx steroid and antihistamine like Benadryl. Any new detergent or fabric softener? Those pills were? Directions? ...Read more

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18 month old got her vaccines that were due and a flu shot 10 days ago. Now she is breaking out in hives. No symptoms or diet change. Related?

18 month old got her vaccines that were due and a flu shot 10 days ago.  Now she is breaking out in hives.  No symptoms or diet change.  Related?

Possible: It is usually not the killed virus itself but what may be added to the vaccine which can cause an allergic reaction. For example, some vaccines do contain small amount of gelatin to which a few people may have become allergic. ...Read more

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Is it abnormal for my 3 year old to develop hives around the injection site of a flu vaccine? They didn't show up until the next day.

Is it abnormal for my 3 year old to develop hives around the injection site of a flu vaccine? They didn't show up until the next day.

Injection site Rx: An injection site reaction is the appearance of skin changes and irritation at the location of an injection. Such reactions can be especially common with some types of drugs and in other cases might be the result of allergies or sensitivities. Some can be dangerous. If a patient notices skin changes, it is important to contact a doctor or nurse to discuss them. ...Read more

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I broke out in hives right after dinner, starting at my lower torso. I also had the flu vaccine 4-5 hrs earlier. Do I have food or vaccine allergy?

I broke out in hives right after dinner, starting at my lower torso. I also had the flu vaccine 4-5 hrs earlier. Do I have food or vaccine allergy?

Vaccine more likely: Either one sounds possible, but I would be more suspicious of the vaccine. But it might be something else entirely. But to be completely safe, I suggest contacting the doctor's office where you were vaccinated; or your primary care provider if you were vaccinated outside a doctor's office, e.g. a pharmacy. ...Read more

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When should I get my flu shot?

When should I get my flu shot?

Mid-Sep. to mid-Nov.: In the U.S., the best time to get a flu shot each fall is in October, which means September through November is fine. However, if one misses his shot at those times, it is still fine to get it anytime until the end of the flu season. The flu season ends at the end of winter (February-March). ...Read more

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How safe is a flu shot?

How safe is a flu shot?

Very!!: Although side effects can occur, such as fever, soreness, occasional achiness, and theoretically very rare more serious problems, it is much safer than being infected with the potential side effects of the infection, up to and including death! Immunize, immunize, immunize. ...Read more

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How do you give a flu shot?

How do you give a flu shot?

Needle size: Good point on the length of the needle. I have seen offices use the 5/8" needle which is way too short to get into the muscle. You must use at least a 1" needle depending on the person you are injecting. ...Read more

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Could someone get sick from a flu shot?

Flu Shots: The flu shot has inactivated virus- so it will not infect you with the flu. If you have reactions to the shot they usually resolve within one to two days. Side effects can include a low grade fever, aches & pain, and localized swelling, redness and pain at the shot site. Some people have had allergic reactions to the flu vaccine. ...Read more

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What happens if a child gets an adult flu shot?

What happens if a child gets an adult flu shot?

Not much usually: If a child gets an adult flu shot then usually there is not much that happens although a higher dose may cause a skin reaction. Just monitor carefully and if something starts to happen then please contact your dr for treatment of symptoms or if needs to be seen. Did your child get an adult flu shot? ...Read more

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What is the definition or description of: flu shot?

What is the definition or description of: flu shot?

Flu shot: It is the trivalent influenza vaccine which contains purified inactivated antigens against viral strains from a & b virus strains. ...Read more

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Should I get a flu shot?

Should I get a flu shot?

Your decision: If you belong to a vulnerable health group, such as elderly (65+) or/and have chronic health conditions, such as diabetes, lung disease, immune system disorder, asthma or any lung condition, you should get vaccinated. Also, if you liver or care for people with above conditions and they may catch it from you, you want to protect them by getting the shot. Otherwise, it is your decision. ...Read more

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When was my last flu shot?

When was my last flu shot?

Ask your doctor: We do not have your medical records. You should keep track of your immunizations, ...Read more

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When should I get flu shot?

NOW !: Get it as soon as possible when available. Winter is flu season but according to the cdc when it occurs ; how long it lasts is variable. Sometimes flu outbreaks can begin as early as october. Over the last 30 years the peak flu month has most often been february. ...Read more

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Can I get flu from flu shot?

Can I get flu from flu shot?

No: A resounding no. The fever or occasional symptoms are a consequence of the immune system reacting to the vaccine. Not any infection. ...Read more

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Fever 2 days after flu shot?

Fever 2 days after flu shot?

Not uncommon: Fever is a sometimes unpleasant side effect of the flu shot (and most vaccines). Good news is your body's responding appropriately and your immune system is working. If the fever lasts more than 24 hrs or you're having other side effects, it doesn't hurt to let your doc know. Otherwise, it'll go away on its own. Best of luck! ...Read more

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Does drinking affect flu shot?

Does drinking affect flu shot?

Drinking what?: There isn't any drink that one can buy at the grocery store or liquor store that will alter the effectiveness of a flu shot. The only things would be medications such as prednisone syrup from the pharmacy. So, if one is drinking prednisone syrup or other immunosuppressant drugs, let the doctor know so he can adjust the timing of the flu shot in case the shot should be done earlier or later. ...Read more

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Can the flu shot cause the flu?

Can the flu shot cause the flu?

No: No. The virus in the vaccine is not a live virus and cannot cause the flu. ...Read more

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Should I get my baby a flu shot?

Should I get my baby a flu shot?

Yes: If there's no specific reason your child shouldn't receive the shot, like an allergy, then, yes, most definitely. Flu shots can be given yearly after 6 months of age. Not giving the shot is not the same as not taking a risk; you're just accepting the much larger risk of getting the illness and a serious complication. Besides hygiene/clean water, nothing compares with vaccines for health value. ...Read more

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Can the flu shot cause sickness?

Influenza vaccine: Flu shot side effects may include: slight swelling, redness or pain at vaccination site. If headache, nausea, fever or muscular pain occur they usually resolve within one to two days. You won't get the flu from a flu shot because the virus either contains inactivated virus or doesn't have virus particles in it. Severe side effects are rare. ...Read more

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What chemicals are in a flu shot?

What chemicals are in a flu shot?

Check insert: Regular flu shots carry a warning of egg allergy. The flu virus in routine shots is a dead virus so you can't "get the flu" from the shot (a common misunderstanding). The nasal flu vaccine is not a dead virus and is not recommended in pregnant women. As far as preservatives, or chemicals they vary from company to company. ...Read more

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When should the flu shot wear off?

When should the flu shot wear off?

You should get : A new flu shot every year — as it will target different virus strains/ mutations. ...Read more

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Long does a flu shot last usually?

A year: Good question. The influenza virus mutates rapidly so each year's vaccine varies as each year's vaccine is based on the most prevalent flu strains from the last flu season. The actual immunity derived from a given flu shot probably lasts more than one year, but it is important to get a new shot each year, due to the changes. ...Read more

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Can you get sick with the flu shot?

Not with the flu: You may experience flu-like symptoms while your body's immune system is responding to the vaccine challenge, but the vaccines usually are a killed virus (there is a weakened live virus form available to healthy persons between 2-49 y/o). ...Read more

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Who should get a flu shot in the us?

Influenza Vaccine: Really — anyone over the age of 6 months. ...Read more

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What is the half-life of a flu shot?

What is the half-life of a flu shot?

Lasts through season: I'm not sure if you're asking when it will kick in, or how long it lasts... Flu shots are good for the season, since they're geared to the expected strains. They don't "wear off" so much as fail to cover the strains coming out the next fall. It takes a couple weeks for the immunity to kick in, but they should last a long while; new shot needed every fall due to new strains. ...Read more

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Can you give your child the flu shot?

Can you give your child the flu shot?

Certainly yes: Any child 6 months or older has the first priority to receive flu shot. ...Read more

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Why is it important to get a flu shot?

Flu isn't innocent: The flu shot is highly effective at preventing not only you from getting the flu, but from you spreading it about. Most who get the flu have high fevers, coughing, and vomiting and misery. A large group get pneumonia, and about 36k die in this country every year. Those with infants under 6mo have to get the shot so baby doesn't get it. Infants are especially susceptible to bad consequences. ...Read more

Dr. James Krick
3 doctors shared insights

Hives (Definition)

An outbreak of red bumps or wheals that appear quickly after exposure to certain allergens (foods, medications, other substances). They can vary in size, are itchy, can burn, and can last for up to ...Read more