Addison’s disease, also known as Adrenal Insufficiency or Hypocortisolism, is an endocrine disease that occurs when the adrenal glands do not produce enough of the hormone cortisol and sometimes, aldosterone. Discuss topics including symptoms and treatments for Addison’s disease.
http://thyroid.about.com/library/howto/htthyroid-check.htm
Here's How:
Don't get your Adam's apple confused with your thyroid gland. The Adam's Apple is at the front of your neck, the thyroid is further down, and closer to your collarbone
If you see any bulges, protrusions, lumps or anything that appears unusual, see your doctor right away. You may have an enlarged thyroid, or a thyroid nodule, and your thyroid should be evaluated.