What does Ringworm primarily look like on the skin?

Ringworm, which is a fungal infection caused by dermatophytes, primarily manifests on the skin as circular inflamed patches. These patches can be red and may have a slightly raised border. A characteristic feature of ringworm is the presence of pustules or blisters that can appear within these patches, often filled with pus. This is due to the inflammatory response triggered by the infection.

The circular shape of the lesions, often described as resembling a "ring," is distinct. The scaly and inflamed nature of the patches helps to differentiate ringworm from other types of skin conditions that may have overlapping symptoms. In this case, the description of circular inflamed patches with pus-filled blisters accurately captures the typical presentation of ringworm, making it the correct choice.