There has been a 23% increase in the number of people presenting with self-harm since 2017.
That is according to the charity Pieta House which, along with St Patrick's Mental Health Services, is highlighting Self-Injury Awareness Day.
They are urging awareness and education of self-harm.
Recent self-harm figures show that children as young as 10 are presenting with self-harm, and that incidences among LGBTI+ young people are twice as high compared to their non-LGBTI+ peers.
St Patrick's Mental Health Services and Pieta House are highlighting the need for more education around self-harm and are encouraging the public - particularly parents and those working with young people - to increase their understanding around the issue.
The highest rates of self-harm in both men and women in the first six months of 2018 were among adolescents and young adults.
There were 6,124 self-harm presentations to hospitals in the first half of this year, representing a 4% increase from 2017.
While there was a 21% increase in self-harm in 10-24 year olds between 2007 and 2017.
Director of services at St Patrick's Mental Health, Tom Maher, said: "The increase in the incidence of self-harm presentations since 2010 highlights the fundamental need for further education, awareness and understanding around self-harm.
"In reality, the incidences of self-harm are even higher than the recorded figures as many people will not present to hospitals at all - often as a result of the stigma and negative attitudes towards mental health difficulties that are still engrained within Irish society."
Lena Lenehan, senior clinical director at Pieta House, added: "Pieta House has seen a 23% increase in the number of clients presenting with self-harm since 2017.
"This is a significant increase and we want to highlight the importance of awareness on self-harm and positive mental health and tackling the stigma surrounding mental health issues."
Speaking about the increased risk of self-harm in the the LGBTI+ community, BeLonG To executive director Monnine Griffith said: "Growing up LGBTI+ can be challenging, particularly when someone is hiding their sexual orientation or gender identity.
"Discovering and beginning to accept that part of your identity is often associated with a sense of isolation, fear of rejection and confusion.
"Feelings of anxiety, depression and loneliness are everyday realities for many LGBTI+ young people, resulting in two times the level of self-harm compared to their non-LGBTI+ friends.
"The presence of a supportive adult can be a lifeline for LGBTI+ young people. Together we can create a safer, more supportive Ireland where all of our young people belong."
Anyone affected by issues raised in this article can contact St Patrick's Support & Information Service on 01-249-3333 or e-mail email@example.com; Pieta House on 1800-247-247 or BeLonG To Youth Services on 01-670-6223