I found out during an admission to the Emergency department for asthma – my heart rate seemed too high even for someone who had just had nebulized salbutamol so the duty doctor checked for TSH, T3 and T4. That was when I found out, and was later told that having just had a baby at age 40 that had made me more susceptible to it. The diagnosis also explained the previous 6 months of disturbed sleep, irritability, eye pain, stomach upset, sweatiness, weight loss and pretibial myxedema.
