General: The term balanitis refers to inflammation of the glans penis, while balanoposthitis refers to inflammation of the glans and prepuce; both entities are most often seen in uncircumcised males due to poor hygiene and accumulation of smegma beneath the foreskin, but other causes include candida, BXO, contact dermatitis, etc.
Plasma cell balanitis (Zoon's balanitis).
Also known as balanitis circumscripta plasmacellularis (in females: vulvitis circumscripta plasmacellularis).
Affects only uncircumcised males, and is thought to represent a reaction to a multitude of diverse stimuli.
Gross: single large (>2 cm) bright red moist patch on the glans or inner prepuce.
Dermis contains dilated capillaries and the epidermis may be thin or partially absent.
Intracellular edema may be prominent.