Symptoms and Causes

Overview Osteochondritis dissecans is a joint condition that develops when blood flow to the bone beneath joint cartilage is reduced. This lack of blood supply causes…

Overview Gastrointestinal stromal tumors (GISTs) are cancerous growths that develop in the digestive tract. They most commonly form in the stomach and small intestine. These tumors…

Overview A leg fracture happens when a bone in the leg breaks or cracks. People often break their legs from falling, being in car accidents, or…

Overview A rectovaginal fistula is an abnormal opening that forms between the rectum and vagina. This unwanted connection allows intestinal contents to pass into the vagina….

Overview Frontal lobe seizures are a common type of epilepsy. They start in the front area of the brain. During these seizures, brain cells in the…

Overview MOGAD stands for Myelin Oligodendrocyte Glycoprotein Antibody-Associated Disease. It is an uncommon inflammatory condition that attacks the central nervous system. When someone has MOGAD, their…

Overview Fibromuscular dysplasia (FMD) is a non-inflammatory vascular condition that affects medium-sized arteries in the body. The condition causes these arteries to narrow and enlarge, which…

Overview Trachoma is a bacterial eye infection caused by Chlamydia trachomatis. This highly contagious disease spreads through direct contact with infected eyes, eyelids, and secretions from…

Overview Chondrosarcoma is a rare cancer that typically begins in bone tissue but may also develop in soft tissues near bones. This cancer most commonly affects…

Overview Bird flu, or avian influenza, results from influenza type A virus infections in birds. The severity varies widely—some birds show no symptoms, while others become…