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A comedo can be open (blackhead) or closed by skin (whitehead) and occur with or without acne. [3] The word comedo comes from Latin comedere 'to eat up' and was historically used to describe parasitic worms; in modern medical terminology, it is used to suggest the worm-like appearance of the expressed material.
[3] [2]: 64 They are typical among those with naturally oily skin and large pores, even if those individuals have ceased to produce acne. [2]: 64 They are not a sign of infection or any other ailment including acne, [2]: 16 and are commonly mistaken for, though cannot form, [2]: 26 blackheads. Expression, or squeezing, is discouraged as ...
Comedones (blackheads and whiteheads) must be present to diagnose acne. In their absence, an appearance similar to that of acne would suggest a different skin disorder. [29] Microcomedones (the precursor to blackheads and whiteheads) are not visible to the naked eye when inspecting the skin and require a microscope to be seen. [29]
If the pore closes, it'll appear white and is called a whitehead; if the pore remains open it looks dark and is called a blackhead. First thing's first: Acne as a whole is extremely common.
What it looks like: Scabies is a discolored, splotchy rash that can appear pimple-like on any affected parts of the skin. Patients might also notice tiny lines on the skin where the mites have ...
They appear as small, red tender bumps called papules. There may be a combination of whiteheads and blackheads that also appear around the area affected, the difference being that whiteheads are closed and clogged pores whereas blackheads are also clogged but open pores. The symptoms may vary also depending on a person's skin type; overly oily ...