Hypersensitivity reactions to proton pump inhibitors in childhood.

Hypersensitivity reactions (HRs) to proton pump inhibitors (PPIs) are mainly described in adults. Anyway, increased use of PPIs in childhood has been observed in recent years. In the literature, only case reports are published on children. Most of the PPI HRs are IgE-mediated. Skin test concentrations and allergy workup protocols used for adults are also applied in children. This study underlies that multicentric pediatric studies focusing on PPI reactions in children are needed.