Introduction
Heparin-induced allergic reactions may cause problems if heparin administration is needed for thrombo-embolic disease in pregnancy.Case reports
We report two cases of hypersensitivity to low molecular weight heparin (LMWH) in pregnancy.Discussion
Alternative methods and new antithrombotic agents are discussed.Keywords Low molecular weight heparin - Pregnancy - Delayed hypersensitivity - Allergy