What syndrome occurs at a dose of 200 to 1,000 rad?

The dose of 200 to 1,000 rad corresponds to Hematologic Syndrome, which primarily affects the bone marrow and blood cells. When an individual receives this radiation dose, it can cause significant damage to the hematopoietic system, leading to a decrease in blood cell production. This results in a range of symptoms such as anemia, increased susceptibility to infections, and bleeding due to the depletion of white blood cells and platelets.

Hematologic Syndrome is characterized by a latency period followed by the onset of clinical symptoms, which can lead to serious complications if the exposure is not managed effectively. Since this dose range primarily impacts the blood-forming tissues, immediate medical intervention is critical to improving outcomes.

Other options, like Gastrointestinal Syndrome and Central Nervous System Syndrome, occur at higher radiation doses, typically above 1,000 rad, making them irrelevant in the context of the specified dose range. Temporary Epilation also does not fit the criteria as it pertains to less severe radiation effects and involves hair loss, which does not denote the systemic dangers present in Hematologic Syndrome.