Hepatitis A is a dangerous disease caused by the hepatitis A virus that affects the liver. Hepatitis A is spread most often through infected food or water and by close person-to-person contact with infected persons, such as between persons living in the same household, the Mayo Clinic reports.
Injection Site Complications
Swelling, soreness, and pain at the site of injection can occur in patients following vaccination with the hepatitis A vaccine, according to the Mayo Clinic. The use of a cold compress may alleviate injection site swelling. Patients may ask their health care provider if they could take ibuprofen or acetaminophen to relieve soreness and pain. Injection site complications should subside within a few days of vaccination.
Headache, Tiredness, and Loss of Appetite
Patient's can experience headache, tiredness, and loss of appetite following injection with the hepatitis A vaccine. According to the Centers for Disease Control and Prevention, about 1 out of 6 adults and 1 out of 25 children will experience a headache, about 1 out of 12 children can suffer from a loss of appetite, and about 1 out of 14 adults will experience tiredness. A physician should be consulted if headache becomes severe. The use of a children's nutritional supplement such as Pediasure may be useful for a pediatric patient experiencing poor appetite to ensure daily adequate nutritional intake.
Moderate to Severe Reactions
In rare cases, one may experience a severe reaction to the hepatitis A vaccine. Any unusual symptoms or side effects should be promptly reported to a physician. It is possible to experience an allergic reaction to this vaccine. Patients who have had an allergic reaction to any vaccine component should not receive the hepatitis A vaccine. Signs of a serious allergic reaction can include difficulty breathing, hoarseness or wheezing, hives, paleness, weakness, a fast heart beat or dizziness, according to the CDC. Emergency medical attention is necessary in the event of an allergic reaction.
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