Final answer:
Perioral dermatitis predominantly affects women and is a skin condition that causes a rash and inflammation around the mouth, related to factors like steroid creams and is exclusive to the epidermis layer.
Step-by-step explanation:
Perioral dermatitis typically affects women more frequently than men.
This skin condition is characterized by a rash and inflammation around the mouth, which may sometimes be mistaken for acne.
Contrary to the information provided about trichomoniasis, which is a sexually transmitted infection that can show symptoms in both men and women, perioral dermatitis is a skin concern and its causes are not linked to sexual activity.
While the exact causes of perioral dermatitis are not fully understood, factors such as topical steroid creams, heavy skin creams, and fluoridated toothpaste have been implicated.
It does not occur due to poor hygiene and is not something that can be attributed to sun exposure.
Hence, limiting sun exposure won't necessarily reduce the risk of developing perioral dermatitis, which primarily affects only the epidermis, the outermost layer of the skin.