Human chorionic gonadotrophin induced Hyperemesis and Hyperthyroidism in Pregnancy

A 33 year old female with a singleton pregnancy presented with hyperemesis gravidarum at 6 weeks gestation in her second pregnancy. Thyroid function tests revealed biochemical hyperthyroidism. After multiple admissions to the hospital, her hyperemesis settled with conservative management and thyroid function tests returned to normal at 10 weeks without any antithyroid treatment. Hyperthyroidism secondary to b hcg is a recognized occurrence. It is something to consider when admitting a patient with hyperemesis as hyperthyroidism worsens and mimics signs of hyperemesis.