An increased incidence of the disease in patients receiving systemic or topical corticosteroid therapy.
There is a clear connection with smoking - in patients who smoke, the disease occurs much more often than in non-smokers. Unfavorable meteorological factors (wind, dry climate) play a certain role.
The disease begins with the appearance of papules and yellow plaques with open, black, comedones on sun-exposed areas of the skin, which, unlike comedones, do not become inflamed in acne. Rashes are usually symmetrical and are localized mainly in the periorbital region, on the temples, cheeks, forehead, less often in the periauricular region, the rear of the hands and forearms.