"Suicide is not a mental illness, but can be a consequence of an underlying psychiatric difficulty like depression, bipolar disorder, schizophrenia, addiction or personality disorder, which may be treatable if timely help is provided," said Sunil Mittal, Senior Consultant (Psychiatrist) and Director at Cosmos Institute of Mental Health and Behavioural Sciences (CIMBS) -- a city based mental healthcare service provider, in a statement on Thursday.