<prompt> Presently, classification of psychiatric illness is done by: March 2009DSM-IV-TRICD-10Both of the aboveNone of the above  <response>: Ans. C: Both of the above The modern era in the classification of mental diseases began towards the end of the 18th century during the French Revolution with the concepts and humane practices of figures such as Philippe Pinel 1745-1826. William Cullen 1710-90 tried to subsume under the heading of neurosis all forms of mental disorder including such conditions as tetanus, epilepsy, vesania, and a rough description of psychosis, but his concepts soon proved over-inclusive. The term psychosis was first formulated by Ernst von Feuchtersleben 1806-49 in his Principles of Medical Psychology. At present, there are two major classifications in Psychiatry, namely ICD-10 1992 and DSM-IV-TR 2000. 