Othello Syndrome is a type of delusional jealousy, marked by suspecting a faithful partner of infidelity, with accompanying jealousy, attempts at monitoring and control, and sometimes violence. The problem is named for Shakespeare's Othello, who murdered his beautiful wife Desdemona because he believed her unfaithful. I came across Othello Syndrome because of a fascinating article at The Dana Foundation, When a drug leads to suspicions of infidelity. Here we have a mental illness induced as a side-effect in some patients as a result of taking dopamine to help with Parkinson's disease. In rare cases the treatment, which attempts to boost dopamine levels, brings on this stubborn delusion, which can transform a previously trusting relationship into a nightmare of suspicion, bitterness, and relentless accusations of infidelity. The sheer strangeness of Othello syndrome aroused the curiosity of Keith Josephs, a professor of neurology at the Mayo Clinic College of Medicine in Rochester, Minn