A dilated pore of Winer is a noncancerous tumor of a hair follicle or sweat gland in the skin that appears as a single, enlarged pore. It is usually asymptomatic, and the surrounding skin appears normal, although a background of actinic damage may be noted. Inflammation or infection along with pain and swelling can occur with manipulation. Dilated pores of Winer are usually much larger than a blackhead, but some appear very close in appearance. The pore may be occluded by a keratin plug with softer, white, keratin material beneath. They are common in middle-aged or older patients who may report a previous history of severe acne.
There are no specific ingredients or materials associated with dilated pores of Winer. Treatment options include comedone extractors, surgical removal, and biopsy to rule out malignancy in individuals who have an atypical presentation. There are no at-home medical treatments, such as topical applications, to treat a dilated pore of Winer. To prevent dilated pores of Winer from forming, maintaining a consistent skincare routine is recommended, which includes cleansing and clearing the pores.