Urolagnia

Urolagnia is a sexual interest in urine, including its smell, sight, or use during sexual activity. It is also known as undinism or, informally, watersports.

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Paraphilia: A persistent and intense sexual interest that differs from commonly accepted interests. Urolagnia is discussed as a paraphilia when its intensity or consequences become clinically relevant.
Sexual health: A state of physical, emotional, mental, and social well-being in relation to sexuality. It provides a framework for considering safety and well-being in sexual activity involving urine.
Fetishism: A sexual interest focused on a particular object, material, or body part. Urolagnia focuses on urine, while fetishism commonly centers on an object or material.
Paraphilia epidemiology: The study of the distribution and frequency of paraphilias in populations. Reliable population estimates for urolagnia are limited by stigma and inconsistent definitions.
Paraphilic disorder: A mental disorder involving a paraphilia that causes distress or impairment, or involves harm or risk to others. A sexual interest alone does not establish this diagnosis; distress, impairment, or nonconsensual harm matters.
Sexually transmitted infection: An infection transmitted primarily through sexual contact. Urine itself is not a usual route for most sexually transmitted infections, but sexual contact can transmit them.
Urophagia: The act of drinking urine. It names one specific behavior that may occur in urolagnia, not the broader sexual interest.
Sexual behavior research: The systematic study of human sexual attitudes, interests, and practices. Broader research methods help explain why evidence about less commonly reported interests remains sparse.
Sexual consent: Freely given, informed, specific, and reversible agreement to sexual activity. Any partnered activity involving urine requires agreement to the specific acts and their boundaries.
Urinary tract infection: An infection affecting the urinary system, commonly the bladder or urethra. An active infection can make urine exposure or contact with genital tissue medically relevant.