parasuicide

noun

the deliberate infliction of injury on oneself or the taking of a drug overdose as an attempt at suicide which may not be intended to be successful
a person who commits such an act

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012