Skin and Related Effects

• Babies and children may develop some skin-related side effects from the Infanrix vaccine, and parents or caregivers should report those effects to a doctor. According to the Mayo Clinic, some patients have noticed redness or swelling greater than 4 inches at the injection site, as well as skin discoloration or itching. Ulceration, stinging or scarring are also possible with the vaccine, and the child's nails, skin or lips may have a blue tinge.
  
  

Nervous System and Related Effects

• Some vaccinated children may have side effects related to the nervous system that require medical attention. According to the Mayo Clinic, children treated with Infanrix may collapse, cry for several hours or have a seizure. Some parents and caregivers have reported children with a fever higher than 102.2 degrees Fahrenheit. Agitation, blurred vision or confusion may occur. Unusual drowsiness, hallucinations and unusual jerking motions of the body have also been reported with this drug.
  
  

Gastrointestinal and Urinary Effects

• Gastrointestinal or urinary side effects have been reported with Infanrix that require medical assistance. According to the Mayo Clinic, some children have bloody, tarry or black stools. Diarrhea, nausea or vomiting may develop after the vaccine has been administered, and children may lose control of their bladders or have blood in their urine.
  
  

Other Side Effects

• Other side effects are possible with the Infanrix vaccine; notify your physician if they occur. Vaccinated children can have severe pain at the injection site, bleeding gums or a bloody nose. Mood changes, difficulty swallowing or shortness of breath have been reported, as have chest tightness, unusual weakness and wheezing.
  
  

Mild Side Effects

• Some side effects that have been observed in children who were vaccinated with Infanrix are mild and temporary. Children can run a mild fever, lose weight and become more restless or fussier than usual. Other common side effects include mild pain, tenderness and swelling at the injection site.