Blackheads are tiny, dark spots on the skin. They are caused by a small plug in the opening of a follicle (pore). Blackheads are also called open comedones.
Related conditions include:
Blackheads can be treated with creams that contain salicylic acid or tretinoin. They can be removed by a skin doctor.
Habif TP. Acne, rosacea, and related disorders. In: Habif TP, ed. Clinical Dermatology. 6th ed. Philadelphia, PA: Elsevier; 2016:chap 7.
Zaenglein AL, Thiboutot DM. Acne vulgaris. In: Bolognia JL, Schaffer JV, Cerroni L, eds. Dermatology. 4th ed. Philadelphia, PA: Elsevier; 2018:chap 36.