POTS: Lightheadedness and a racing heart- Harvard Health
Dr. Dara Lee Lewis
October 4, 2021

Part I: POTS: Lightheadedness and a racing heart- Harvard Health

A blurry picture of a person standing in a circle of leaves.

POTS: Lightheadedness and a racing heart - Harvard Health


In this article Dr. Lee Lewis will explain what’s known so far about the triggers and hallmark symptoms of POTS. In a later post, She will discuss diagnosis and treatment.


Recent Blog Posts


Healthcare worker in blue scrubs wearing a black stethoscope around the neck
By Dara Lee Lewis, MD • August 3, 2026
Learn which heart problems, like valve conditions, can be detected with a stethoscope and when treatment may be needed.
A person receiving an injection in the upper arm; blue liquid in the syringe, gloved hands.
By Joel T. Katz, MD • August 8, 2025
Learn how safe, effective seasonal vaccines help prevent severe disease, backed by CDC research and clinical trials.
Menopause and your heart what every woman needs to know
By Dr. Simin Lee • May 23, 2025
Learn how menopause affects your heart health and practical steps you can take to protect your cardiovascular health.
Show More