Childline says 45,000 calls will go unanswered next year as it is forced to stop its night service.
The charity has issued an emergency public appeal for €1.2m in funding to keep the 24-hour service operational.
Childline has issued new figures which show that issues of abuse, personal welfare and mental health accounted for more than 21% of calls answered between January and September.
Childline revealed the share of calls from January to September 2014 under six main issues are:
44% of calls answered by Childline related to Personal life
14% of calls related to Abuse and Welfare
11% of calls related to Sexuality
7.5% of calls related to Mental Health
6% of calls related to Relationships
17.5% of calls were requests for information
ISPCC interim CEO, Caroline O’Sullivan, said: "My greatest concern is for the many children who are in abusive situations that account for 14% of our calls. These children really need us on a 24/7 basis and thousands of these children will not be heard next year if we cannot raise the funds to keep the night service open.
"Childline is, and wants to remain, a service that gives children and young people a voice."
The Childline Emergency appeal ‘SaveChildline24’ runs through the month of November.
Donations can be made online at www.savechildline24.ie or a €4 text donation can be made by texting CHILDLINE to 57911 (Texts cost €4. A minimum of €3.20 will go directly to Childline).