EU: HPV-vaccin inte bakom ovanliga syndrom

Postural orthostatic tachycardia syndrome (POTS, also known as postural tachycardia syndrome) is a condition in which a change from the supine position to an upright position causes an abnormally large increase in heart rate, called tachycardia. Other symptoms of an orthostatic nature — occurring in response to upright posture — may accompany the tachycardia. The causes of POTS are poorly understood, and it is likely that several distinct underlying problems can lead to the symptoms of POTS. A variety of treatments, including exercise and medications, can improve symptoms for the majority of people with POTS. Many experience "a reasonable recovery with recovery defined as the relative absence of orthostatic symptoms alone with the ability to perform the activities of daily living with minimal restriction", while in others the condition persists indefinitely. It has been estimated that there are between 500,000 and 3,000,000 people with POTS in the United States alone.

Komplext regionalt smärtsyndrom (Complex regional pain syndrome, CRPS) innebär bland annat en intensiv och ihållande, brännande smärta som utlöses vid beröring av den drabbade kroppsdelen, vanligen arm eller ben. Tillståndet kallades förr kausalgi och sympatisk reflexdystrofi.