Which of the following is a non-stochastic (deterministic) effect?

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Multiple Choice

Which of the following is a non-stochastic (deterministic) effect?

Explanation:
Deterministic (non-stochastic) effects have a threshold dose and the severity increases as the dose grows. Erythema fits this pattern: skin reddening appears only after a certain skin dose is exceeded, and as the dose gets higher, the redness becomes more pronounced and can be followed by more serious skin damage. In contrast, cancer, leukemia, and genetic mutations are stochastic effects—occurring probabilistically with dose, without a fixed threshold and often with long latency. Thus, erythema is the non-stochastic (deterministic) effect.

Deterministic (non-stochastic) effects have a threshold dose and the severity increases as the dose grows. Erythema fits this pattern: skin reddening appears only after a certain skin dose is exceeded, and as the dose gets higher, the redness becomes more pronounced and can be followed by more serious skin damage. In contrast, cancer, leukemia, and genetic mutations are stochastic effects—occurring probabilistically with dose, without a fixed threshold and often with long latency. Thus, erythema is the non-stochastic (deterministic) effect.

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