The term "radiation poisoning" refers to the harmful effects caused by exposure to high levels of radiation. It can result in damage to cells, tissues and organs, leading to symptoms such as nausea, vomiting, fatigue, skin burns, and even death if not treated promptly. The most common cause of radiation poisoning is exposure to ionizing radiation, which includes X-rays, gamma rays, or alpha particles. This can occur in situations where there has been an accidental release of radioactive materials, such as a nuclear power plant meltdown, or through intentional acts like radiological terrorism.