BMC Infectious Diseases is open access, peer-reviewed journal that considers articles on all aspects of the prevention, diagnosis, and management of infectious and sexually transmitted diseases in humans, as well as related molecular genetics, pathophysiology, and epidemiology.
A disease is a particular abnormal condition that affects all or part of the structure or function of an organ, and is not the cause of an immediate external injury. The diseases are often known to be associated with medical conditions with specific symptoms and signs. A disease can be caused by external factors such as pathogens or internal dysfunctions. For example, the immune system of internal dysfunctions can produce a variety of different diseases, including various forms of immunodeficiency, hypersensitivity, allergies, and autoimmune disorders.
In humans, the disease is often used more broadly to refer to any condition that causes pain, dysfunction, distress, social problems or death of the person, or those with similar problems. In this broader sense, this sometimes includes injuries, disabilities, disorders, syndromes, infections, isolated symptoms, behaviors, and other purposes. Illnesses can affect people not only physically, but also mentally, because contracting and living with an illness can change a person's outlook on life.