Which type of skin lesion is characterized by raised bumps or pus-filled spots?

The type of skin lesion characterized by raised bumps or pus-filled spots is papules and pustules. Papules are small, raised lesions that are typically solid and can vary in size, whereas pustules are similar but filled with pus, giving them a more inflamed appearance. This combination of characteristics makes papules and pustules particularly identifiable when examining skin conditions.

Crusts represent dried exudate on the skin surface, which does not convey the raised, bump-like quality associated with papules or pustules. Scales refer to flakes or pieces of skin that have dried and shed, indicating a different form of skin response than that which manifests as raised lesions. Alopecia, on the other hand, describes hair loss and is unrelated to the physical characteristics of skin lesions like those seen in papules and pustules.