Signs of an allergic reaction may include itchy skin rash, shortness of breath and swelling of the face or tongue. • if your child has previously had intussusception (a bowel obstruction in which one segment of bowel becomes enfolded within another segment). • if your child was born with a malformation of the gut that could lead to intussusception. • if your child has any disease which reduces his/her resistance to infection. • if your child has a severe infection with a high temperature.