Which symptom is listed as a bed bug medical impact that relates to sleep?

• A. Pain, welt, and itchiness
• B. Allergic reactions
• C. Loss of sleep
• D. Anxiety

Answer: (C)

The question is about a sleep-related medical impact from bed bugs. The most direct sleep consequence is loss of sleep, because bites and the resulting itching, discomfort, and worry commonly wake people at night and reduce both how long and how well they sleep. While pain, welts, itching, allergic reactions, and anxiety can affect sleep, they are not the specific outcome described as the sleep-related impact as clearly as losing sleep.