Erotomania, also known as De Clerambault's syndrome, is a rare mental disorder characterized by an obsessive belief that a person is in love with the individual who is not reciprocating the same feelings. It can cause delusions and even result in stalking behavior. There are a few synonyms for the word erotomania, including love obsession, De Clerambault syndrome, and amorous psychosis. Other synonyms for this condition include delusional love, pathological love, and psychotic love. Regardless of the term used, it is essential for individuals experiencing these symptoms to seek professional help and treatment. Psychiatrists can help reduce symptoms through therapy and medication management.