A BBC investigation reveals that dopamine agonist drugs, prescribed for Parkinson's and restless legs syndrome, are causing serious side effects, including compulsive sexual behavior and exploitation. A daughter discovered her father's obsessive porn use and sexual coercion of his wife, linked to his medication. The BBC has received 50 similar reports, some involving child sexual abuse. While the risks are known, doctors aren't always warning patients, and medication leaflets provide inadequate information. Concerns have also emerged about potentially biased studies on a related drug, Rotigotine.

Prepared by Olivia Bennett and reviewed by editorial team.