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'''Mental illness''' is a broad concept covering all sorts of diseases, disorders, and disturbances in the human mind.  

'''Mental illness''' is a broad concept covering all sorts of diseases, disorders, and disturbances in the human mind (see [[psychology]]).  

From the [[Middle Ages]] onward, people have been frightened or dismayed by the "crazy" behavior or speech of others. The idea of locking up mentally disordered people or placing them in [[asylum]]s goes back hundreds of years and has often been mentioned in literature. In Shakespeare's play, [[Hamlet]] appeared to be mentally ill; [[Ophelia]] became mentally ill and killed herself.  

From the [[Middle Ages]] onward, people have been frightened or dismayed by the "crazy" behavior or speech of others. The idea of locking up mentally disordered people or placing them in [[asylum]]s goes back hundreds of years and has often been mentioned in literature. In Shakespeare's play, [[Hamlet]] appeared to be mentally ill; [[Ophelia]] became mentally ill and killed herself.