Which of the following statements about delusory parasitosis is true?

Delusory parasitosis is a psychological condition where an individual believes they are infested with parasites, despite there being no evidence of such an infestation. The key aspect of this condition is that it stems from a mental health issue rather than a physical one. As a result, the belief that one is infested cannot be alleviated through typical pest control measures or reasoning alone.

Pesticides are designed to eliminate actual pests, and applying them would not address the underlying psychological factors causing the individual to perceive an infestation. Similarly, attempts to convince someone through reasoning or evidence will typically not be effective because the distress is rooted in a delusional state. This condition requires appropriate psychiatric intervention and support, rather than treatments aimed at actual pest problems. Hence, the statement that delusory parasitosis cannot be corrected by reasoning or pesticide use accurately reflects the nature of the disorder.