Which condition may involve the presence of pus-filled lesions on the scalp?

The condition that may involve the presence of pus-filled lesions on the scalp is folliculitis. Folliculitis is an infection of the hair follicles, often caused by bacteria, which can lead to inflammation and pus formation. It typically appears as small, red bumps or pus-filled blisters that can be itchy or uncomfortable. This infection can occur anywhere on the body where hair follicles are present, but when it occurs on the scalp, it may lead to noticeable symptoms.

Dandruff is characterized by flaking of the scalp and does not involve pus-filled lesions. Pityriasis refers to a group of skin conditions often characterized by scaling or shedding but does not typically include pus-filled lesions either. Tinea Capitis, a fungal infection of the scalp, may result in other symptoms like ring-shaped lesions, but it is associated with scaling rather than pus-filled lesions.