A dilated pore of Winer is a noncancerous tumor of a hair follicle or sweat gland in the skin. The pore looks very much like a large blackhead but is a different kind of skin lesion.
What is a Dilated pore of Winer?
A dilated pore of Winer is a sometimes-large lesion that looks like a circle with a large, open area of dark material. This material is keratin, a tough protein in the skin that often makes up fingernails and hair.
Dilated pores of Winer are usually much larger than a blackhead, but some appear very close in appearance. Key symptoms of a dilated pore of Winer include:
- a single, enlarged pore in appearance
- black-appearing “plug” in the middle of the enlarged pore
- healthy, normal-appearing surrounding skin
These lesions usually appear on the head and neck, often on the face. However, some people may notice a pore of Winer on their trunk, particularly the back.
What causes a Dilated pore of Winer?
Doctors don’t know what exactly causes a dilated pore of Winer. While there have been some theories over the years, the most current one is that scar tissue starts to build around a cyst in the pore, resulting in an enlarged pore.
Doctors have identified some risk factors for this condition: People who are in middle age or older often develop it, as well as those with a history of severe acne.
It’s also more common in white males who are older than 40.
A dilated pore of Winer can co-occur or appear similar to basal cell carcinoma, a type of skin cancer. For this reason, a doctor may perform a biopsy to ensure the pore of Winer isn’t due to an underlying skin condition.
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