What is the most likely primary driver of the dog’s self-mutilation in this case?

• A. Pruritus due to dermatitis
• B. Pain from infection
• C. Nutritional deficiency
• D. Neurological abnormality

Answer: (A)

The main idea is that itch driving the itch-scratch cycle is the most likely reason a dog starts self-mutilating. When a dog experiences pruritus from dermatitis, the urge to relieve that itch leads to scratching, licking, and biting at the skin. This self-trauma then becomes the primary behavior, often escalating as the dog tries to find relief. Pain from infection can worsen discomfort and contribute to self-trauma, but the trigger is usually the itch rather than the pain itself. Nutritional deficiency or a neurological abnormality can cause skin issues or abnormal behaviors, but they’re less likely to be the immediate driver of self-mutilation in this context unless accompanied by clear signs pointing to those problems.