Pityrosporum folliculitis is a folliculitis alteration caused by round or oval Pityrosporum, characterized by dome-shaped follicular papule or pustule-like lesions.

bubble_chart Clinical Manifestations

1. More common in young adults;
2. Skin lesions are prone to occur on the chest, back, and upper arms;
3. The skin lesions manifest as dome-shaped follicular papules or pustule-like lesions, 2–4 mm in diameter, and are ineffective when treated as acne.

bubble_chart Diagnosis

1. Skin lesions are commonly found on the chest, back, and upper arms;
2. Typical manifestations of skin lesions;
3. Direct microscopic examination of scales reveals short rod-shaped hyphae and round spores;
4. Histopathology of the skin lesions (PAS staining) shows a large number of round or oval budding spores within the hair follicles.

bubble_chart Treatment Measures

Treatment principles:

1. Administer systemic antifungal medications orally.
2. Apply topical antifungal preparations externally.

Medication principles:

1. For localized skin lesions, prioritize external treatment;
2. for extensive and stubborn lesions, consider systemic antifungal medications.

bubble_chart Cure Criteria

1. Cure: Skin lesions subside, fungal direct microscopy is negative once a week for two consecutive times, and histopathology of skin lesions (PAS staining) shows negative spores in hair follicles.
2. Improvement: Skin lesions partially subside, fungal direct microscopy is negative or positive, and histopathology of skin lesions (PAS staining) shows positive spores in hair follicles.
3. No cure: Skin lesions show no improvement, fungal direct microscopy is positive, and histopathology of skin lesions (PAS staining) shows positive spores in hair follicles.