This article is not endorsed by the Centers for Medicare and Medicaid Services (CMS), the federal agency that oversees health insurance coverage in the United States.

It is for informational purposes only.

If you need medical assistance or advice, seek the advice of your physician or other qualified health provider.

Do not disregard professional medical advice or delay seeking it because of a lack of understanding of a medical condition.

Never disregard your doctor’s or other health care provider’s instructions or refusal to prescribe medication.

The ideas expressed in this article are the author’s own and do not necessarily reflect the position of the Centers on Medicare and Medicare Services.