For LGBTQ+ of all ages, the LGBTQ National Hotline is 888-843-4564. Unfortunately they are not available 24/7, but are not age focused.
lgbthotline.org/national-hot...

For LGBTQ+ youth, the Trevor Project is available 24/7 to call, text or chat.
www.thetrevorproject.org/get-help/

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