Symptoms and Causes

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…

Overview Entropion occurs when an eyelid turns inward, causing eyelashes and skin to rub against the eye surface. This condition creates irritation and discomfort for those…

Overview Pancreatic neuroendocrine tumors are uncommon cancers that form in the pancreas. The pancreas is a flat organ behind the stomach that makes digestive enzymes and…

Overview Solitary rectal ulcer syndrome is a rare condition where one or more ulcers form in the rectum. This disorder typically affects people who struggle with…

Overview Nonmelanoma skin cancer includes all skin cancers that are not melanoma. The two most common types are basal cell carcinoma and squamous cell carcinoma, which…

Overview Bladder exstrophy is a rare birth defect where a baby’s bladder forms outside the abdomen during pregnancy. In this condition, the exposed bladder cannot properly…

Overview POEMS syndrome is a rare blood condition that affects the nerves and multiple organ systems. Medical experts haven’t identified the exact cause of POEMS syndrome….

Overview Viral hemorrhagic fevers are serious infectious diseases. They can threaten lives by damaging small blood vessel walls and preventing blood clotting. Several important types include:…

Overview Metachromatic leukodystrophy is a rare genetic disorder. It causes fatty substances called sulfatides to build up in cells throughout the nervous system. This accumulation happens…