Catatonia is a syndrome of motor dysregulation (mutism, peculiar postures, repetitive speech, negativism and imitative movements), and is found in as many as ten per cent of acutely ill psychiatric inpatients. Although its classification has been controversial, the identification of catatonia is not[...]

The riddle of melancholia has stumped generations of doctors. It is a serious depressive illness that often leads to suicide and premature death. The disease's link to biology has been intensively studied. Unlike almost any other psychiatric disorder, melancholia sufferers have abnormal endocrine [...]