Old causes still alive - A case report

Prevalence patterns for infectious diseases change over time and the testing of their presence at referral to hospitals may be reduced when the incidence rates are low. A case is presented, where a suspicion of syphilis as the maybe reason for a stabbing in a train, firstly came during the forensic psychiatric interview. This underscores the need for taking rare causes into consideration and for the use of psychiatrists, not only psychologists at forensic examination of mental illness.