One of the hallmark symptoms of POTS is dizziness and an increased heart rate when standing, although that may not be the worst symptom you experience.
Dysautonomia International: Postural Orthostatic Tachycardia Syndrome
What is an Active Standing Test? - The POTS Treatment Center
Do I Have Postural Orthostatic Tachycardia Syndrome (POTS)? - Dr. Nicholas L. DePace, M.D., F.A.C.C.
Long COVID: The Causes, Symptoms, & Possible Treatments; And Its Relationship With POTS
What is POTS? And how is it related to long COVID?
POTS Syndrome: Ultimate Patient Guide by Cardiologist • MyHeart
Complementary and Integrative Medicine Treatment for POTS in Pediatrics: Testing, Diagnosis, and Treatment
POTS Program Lurie Children's
POTS Mysterious Syndrome Causes Racing Heart and Other Symptoms
POTS(Postural Orthostatic Tachycardia Syndrome), What To Do Next?
Understanding the Mysteries of POTS and Other Autonomic Disorders
POTS diagnosis - My Experience at the Mayo Clinic
Postural orthostatic tachycardia syndrome - MEpedia