12-lead ECG
The resting 12-lead ECG is a useful test to differentiate CPVT from other electrical diseases of the heart that can cause similar abnormal heart rhythms. Unlike conditions such as long QT syndrome and Brugada syndrome, the resting 12-lead ECG in those with CPVT is generally normal. However, approximately 20% of those affected have a slow resting heart rate or sinus bradycardia. Exercise and other provocative testing
Exercise testing, commonly performed on a treadmill or stationary bicycle, can help to diagnose CPVT. During the test, those with CPVT often experience ectopic beats, which may progress to bidirectional and then polymorphic ventricular tachycardia as the intensity of exercise increases. Some of those suspected of having CPVT, such as young children, may not be able to perform an exercise tolerance test. In these cases, alternative forms of testing include adrenaline provocation testing, during which adrenaline is infused into a vein at gradually increasing doses under close supervision and ECG monitoring. Additionally, long term or Holter ECG monitoring can be performed, although this form of testing is less likely to detect an arrhythmia. Invasive electrophysiological studies do not provide useful information to help diagnose CPVT or to assess the risk of life-threatening arrhythmias. Genetic testing
CPVT can also be diagnosed by identifying a disease-causing mutation in a gene associated with CPVT using genetic testing. This technique may be the only way to identify the condition in someone suspected of having CPVT who has died, and in this case may be known as a molecular autopsy.
Capillaritis is where the capillaries, usually of the legs or lungs, are inflamed, allowing blood cells to pass through.It may occur in the lungs as pulmonary capillaritis, or in the skin as pigmented purpuric dermatosis. Capillaritis usually affects otherwise healthy people. Capillaritis can take many forms but is made up of tiny red or brown dots that may be spread out or in a group forming a red or brown patch on the skin. One variation, Majocchi purpupa,  forms concentric rings.Capillaritis is a mild condition not requiring treatment. There is no known cure, however capillaritis can disappear within a few weeks, recur from time to time, or persist for years. == References ==