Leprosy, also known as Hansen's disease, is a chronic infectious disease caused by the bacterium Mycobacterium leprae. It primarily affects the skin and peripheral nerves, and if left untreated, can lead to severe deformities and disabilities. Despite significant progress in treatment and eradication efforts, leprosy remains a significant health issue in certain regions of the world. History of Leprosy has a long and storied history, with references to the disease dating back to ancient texts such as the Bible and the writings of ancient Greek physicians. In the Middle Ages, leprosy was widely feared and was believed to be a punishment from God for sins committed. People with leprosy were often isolated from society and forced to live in leper colonies, where conditions were often harsh and unsanitary. The discovery of the causative agent of leprosy, Mycobacterium leprae, in the late 19th century marked a significant turning point in the understanding and treatment of the disease. Effective treatments were developed, and the use of antibiotics has made the disease much more manageable. Symptoms of Leprosy -The symptoms of leprosy can vary widely depending on the stage of the disease and the individual's immune response. The disease primarily affects the skin and peripheral nerves, leading to skin lesions, numbness, and muscle weakness. In more severe cases, leprosy can cause disfigurement and deformities, particularly in the hands and feet. Leprosy is also associated with a number of other complications, including eye damage, kidney damage, and respiratory problems. In rare cases, leprosy can be fatal.