What are Signs of Radiation Sickness?

Symptoms and Progression

Radiation sickness, also known as acute radiation syndrome (ARS), can be classified into four stages based on the dose of radiation absorbed by the body. The initial symptoms, which can appear within hours to days after exposure, include nausea, vomiting, diarrhea, fatigue, weakness, and loss of appetite. These symptoms can progress to more severe effects, such as damage to the bone marrow, lungs, and central nervous system, which can occur within 1-2 weeks. Severe ARS can lead to death within 2-4 weeks.

Diagnosis and Treatment

Diagnosing radiation sickness can be challenging, as symptoms may resemble those of other conditions. Medical professionals may use radiation dosimetry and laboratory tests to confirm the diagnosis. Treatment for radiation sickness typically involves supportive care, such as hydration, pain management, and blood transfusions to replace damaged bone marrow cells. In some cases, potassium iodide (KI) tablets may be prescribed to block the uptake of radioactive iodine by the thyroid gland. The effectiveness of KI tablets depends on the time of administration and the severity of the radiation exposure.

Prevention and Decontamination

Preventing radiation sickness often involves evacuation from contaminated areas, decontamination, and shielding from further radiation exposure. Individuals contaminated with radioactive materials should be decontaminated as quickly as possible to minimize internal exposure. This can involve removing clothing, washing with soap and water, and using a shower or scrub brush to remove radioactive particles. In the event of nuclear fallout, sheltering in a safe location, such as a basement or storm cellar, and staying there for at least 48 hours can help reduce radiation exposure.