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The long-term effects remain unclear. This study assessed the mental health measured by emotional and behavioural problems and quality of life (QoL) among German children and adolescents, emphasising socio-economic status and gender differences. The help-seeking behaviour among families of children with mental health problems was also examined.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>\n                      A nationwide representative online survey was conducted in April\/May 2024.\n                      <jats:italic>N<\/jats:italic>\n                      \u2009=\u20091,530 children and adolescents (ages 8\u201317) and their parents participated. The self- and parent-report survey assessed behavioural and emotional problems (Strength and Difficulties Questionnaire). QoL (KIDSCREEN-10 Index) was rated in self-report. Parents reported on past help-seeking behaviour within and outside of school via items constructed for the present study.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Behavioural and emotional problems (21.1% in self-report, 22.4% in parental report) and low QoL (27.3%) were higher than pre-pandemic levels. Children from low-income families were particularly affected. Of all parents, 23.7% reported a need for help due to their child\u2019s mental health issues in the last 12 months, with 28.4% of these parents not seeking professional support. Among those who sought help, most contacted multiple services, with teachers, psychotherapists and general practitioners being the most frequently contacted services. Families who secured a therapy placement waited an average of 12 weeks for an initial appointment and 18 weeks to begin therapy.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Behavioural and emotional problems as well as low QoL seem to stabilise at a rate higher than the pre-pandemic baseline, indicating a need for ongoing monitoring, adjustment to the mental health system and further research on correlates and causes of this stabilisation.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1186\/s12889-026-28159-6","type":"journal-article","created":{"date-parts":[[2026,6,19]],"date-time":"2026-06-19T10:45:14Z","timestamp":1781865914000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Mental health, quality of life and mental health service use after the COVID-19 pandemic: Results from a cross-sectional nationwide study among German children and adolescents"],"prefix":"10.1186","volume":"26","author":[{"ORCID":"https:\/\/orcid.org\/0009-0004-7528-2580","authenticated-orcid":false,"given":"Hannah Elisabeth","family":"K\u00f6hler","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0008-7707-7563","authenticated-orcid":false,"given":"Anna-Lina","family":"Rauschenbach","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4217-3108","authenticated-orcid":false,"given":"Kristin","family":"Rodney-Wolf","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Judith","family":"Bauch","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4585-5315","authenticated-orcid":false,"given":"Franziska","family":"Greiner-D\u00f6chert","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4387-9214","authenticated-orcid":false,"given":"Henrik","family":"Saalbach","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2357-2138","authenticated-orcid":false,"given":"Eva","family":"Baumann","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9421-4792","authenticated-orcid":false,"given":"Julian","family":"Schmitz","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2026,6,19]]},"reference":[{"key":"28159_CR1","doi-asserted-by":"publisher","first-page":"e203221","DOI":"10.1001\/jamanetworkopen.2020.3221","volume":"3","author":"A Caspi","year":"2020","unstructured":"Caspi A, Houts RM, Ambler A, Danese A, Elliott ML, et al. 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