Heart problems. 1  Cardiomyopathy (problem with the heart muscle) 2  Heart arrhythmias (rhythm problems) 3  Heart failure. 4  Pericarditis (swelling of the membrane surrounding the heart)
Cortisone Flare. A cortisone flare is one of the many side effects of a cortisone injection, which causes pain and inflammation in the area where the injection has been administered.Advertisement. Cortisone or a corticosteroids are a type of medication that is used to treat inflammation of the joints.ince it is a very strong medicine, it results in certain side effects, a very prominent one being a cortisone flare. A cortisone injection is administered directly at the location of the pain and inflammation.
A cortisone shot is an injection of synthetic cortisone into an inflamed area of the body. Cortisone is a powerful anti-inflammatory and is used to treat a number of syndromes with inflammation as a cause or side effect. Some syndromes are: 1  Tendonitis.2  Bursitis. Cortisone can crystallize and cause pain worse than before the shot. 2  This is called  cortisone flare  and is often brief. 3  Cortisone can cause a lightening of the skin. 4  Cortisone can damage the tissues where it is injected.