Final answer:
The characteristic appearance of the lesions on the chest and back in this case are red, raised, itchy lesions.
Step-by-step explanation:
The characteristic appearance of the lesions on the chest and back in this case are red, raised, itchy lesions. These lesions are typically associated with skin conditions such as eczema or psoriasis. Eczema is characterized by patches of thick, red skin with silvery scales, while psoriasis commonly presents as itchy or sore patches of thick, red skin with silvery scales.