Phimosis: A condition in which the FORESKIN cannot be retracted to reveal the GLANS PENIS. It is due to tightness or narrowing of the foreskin opening.Balanitis: Inflammation of the head of the PENIS, glans penis.Circumcision, Male: Excision of the prepuce of the penis (FORESKIN) or part of it.Foreskin: The double-layered skin fold that covers the GLANS PENIS, the head of the penis.Penile Diseases: Pathological processes involving the PENIS or its component tissues.Paraphimosis: A condition in which the FORESKIN, once retracted, cannot return to its original position. If this condition persists, it can lead to painful constriction of GLANS PENIS, swelling, and impaired blood flow to the penis.Betamethasone Valerate: The 17-valerate derivative of BETAMETHASONE. It has substantial topical anti-inflammatory activity and relatively low systemic anti-inflammatory activity.Lichen Sclerosus et Atrophicus: A chronic inflammatory mucocutaneous disease usually affecting the female genitalia (VULVAR LICHEN SCLEROSUS) and BALANITIS XEROTICA OBLITERANS in males. It is also called white spot disease and Csillag's disease.Penile Neoplasms: Cancers or tumors of the PENIS or of its component tissues.