What is the scientific term for an open comedone?

The scientific term for an open comedone is indeed a blackhead. Open comedones occur when a hair follicle becomes clogged with sebum (oil), dead skin cells, and sometimes bacteria. The opening of the follicle remains open, allowing air to circulate and oxidize the material within, which results in the characteristic dark color of blackheads.

In contrast to blackheads, whiteheads are closed comedones where the clogged pore remains closed, leading to a white or flesh-colored appearance. Pimples typically refer to inflamed lesions caused by acne, which can contain pus and are usually red and swollen. An acne cyst is a more severe form of acne that is deep, painful, and filled with sterile pus, indicating a more serious inflammatory response. Understanding these distinctions is key for effective skin care and treatment approaches.