Graves’ disease accounts for 60-80% of Thyrotoxicosis. The prevalence varies amongst populations reflecting genetic factors and iodine intake. Graves’ disease occurs in upto 2% of women but is 1/10th as frequent in men occurring between 20-50 years of age. The hyperthyroidism of Graves’ disease is caused by Thyroid receptor antibodies which helps to monitor the disease. These antibodies in pregnant Graves’ disease patients can cross the placental barrier and lead to Neonatal Thyrotoxicosis.