Lobular hemorrhage under the finger and toe nails is one of the signs of infective endocarditis. Infective endocarditis (IE) is a direct, infection by microorganisms (bacteria, fungi and other microorganisms such as viruses, rickettsiae, chlamydia, spirochetes, etc.) that produce inflammation of the heart valves or endocardial wall, including acute and subacute endocardial inflammation. So, how do patients diagnose infective endocarditis causing lobar hemorrhage under the finger or toenail? The following is a brief description: Infective endocarditis is often divided into acute and subacute according to the course of the disease, the presence or absence of systemic toxic symptoms and other clinical manifestations, but there is considerable overlap between the two. 1, Acute infective endocarditis occurs mostly in normal hearts. The pathogenic organisms are usually highly virulent bacteria such as Staphylococcus aureus or fungi. The onset is often sudden, with high fever, chills, and obvious signs of systemic toxemia, often as part of a serious systemic infection, with a more rapid and aggressive course, easily masking the clinical symptoms of acute infective endocarditis. Most subacute infective endocarditis starts slowly, with non-specific symptoms such as general malaise, fatigue, low fever and weight loss. A few of them start in the form of complications, such as embolism, unexplained stroke, progressive dangerous exacerbation of heart valve disease, intractable heart failure, glomerulonephritis and heart valve murmur after surgery. 3. Medical history Some patients have a history of dental caries, tonsillitis, intravenous cannulation, interventional therapy or intracardiac surgery before the onset of the disease.