Paroxysmal tachycardia is a form of tachycardia which begins and ends in an acute (or paroxysmal) manner. It is also known as "Bouveret-Hoffmann syndrome". Cause
The cause of this condition is not accurately known, though it is probably of nervous origin and can be aggravated by physical wear and tear. The symptoms are sometimes very alarming but it is not considered in itself dangerous.It has an increased risk of developing in WPW syndrome and LGL syndrome. Diagnosis
Classification
It can be divided by the origin:
supraventricular tachycardia
ventricular tachycardia


== References ==
The German Dermatological Society indicated that Diosmin may be used with other treatments for symptoms of chronic venous diseases.The American Society of Colon and Rectal Surgeons mentions phlebotonics as a possible treatment for symptoms of hemorrhoid grades I to II, as there is only moderate-quality evidence of effectiveness with "expectations of minimal harm", while having no evidence of long-term benefit. French, Indian, Portuguese, and Italian professional societies of coloproctology issued similar recommendations regarding phlebotonics for hemorrhoids. Adverse effects
In some 10% of users, diosmin causes mild gastrointestinal disorders or skin irritations (hives, itching), stomach pain, nausea, heart arrhythmias, or anemia. Preliminary research indicates no evidence of toxicity. The US Food and Drug Administration (FDA) concluded in 2001 that there was inadequate evidence on which to base an expectation of safety. As of 2013, the FDA did not revise this position. Regulatory status
Diosmin is distributed in the U.S. as a dietary supplement called Daflon. Diosmin is not approved as a prescription drug in the United States or Europe. Phlebotonics are not approved in Germany, and are restricted in Spain only for the treatment of chronic venous diseases. See also
Daflon
Venalex


== References ==