[header] How to recognize the signs of graves' disease [title] Pay attention to irritability. [step] Because this condition can throw your hormone levels out of balance, you may feel cranky or even more anxious than usual. You may also suffer from insomnia. 
[substeps] Of course, just feeling irritable doesn't mean you have graves' disease. However, if you are chronically feeling out-of-sorts and anxious and are having other symptoms, you should visit your doctor.