"She has had a tough few weeks and the panic attack in the hospital was the tipping point," they told the magazine.
"She realised she needed to seek additional help for her ongoing emotional issues. She's surrounded by close family and has a lot of support. She's doing better now and is seeking treatment on the East Coast."
TMZ claims Gomez is receiving dialectical behaviour therapy (DBT) and has received that same type of medical care in the past. It is used to treat a range of mental health issues.
Last month Gomez, who is one of the most followed people on Instagram, told her 144 million followers she would be taking a break from social media.
"As much as I am grateful for the voice that social media gives each of us, I am equally grateful to be able to step back and live my life present to the moment I have been given," she wrote.
"Kindness and encouragement only for a bit! Just remember — negative comments can hurt anybody's feelings. Obvi."
Days earlier she opened up to fans in an hour-long Instagram Live session, in which she revealed "depression was my life for five years straight".
"Depression and anxiety was the forefront of everything I did in my life, every single thing."
In September, her on/off boyfriend of eight years Justin Bieber reportedly married Hailey Baldwin.
WHERE TO GET HELP:
If you are worried about your or someone else's mental health, the best place to get help is your GP or local mental health provider. However, if you or someone else is in danger or endangering others, call police immediately on 111.
OR IF YOU NEED TO TALK TO SOMEONE ELSE:
• LIFELINE: 0800 543 354 (available 24/7)
• SUICIDE CRISIS HELPLINE: 0508 828 865 (0508 TAUTOKO) (available 24/7)
• YOUTHLINE: 0800 376 633
• NEED TO TALK? Free call or text 1737 (available 24/7)
• KIDSLINE: 0800 543 754 (available 24/7)
• WHATSUP: 0800 942 8787 (1pm to 11pm)
• DEPRESSION HELPLINE: 0800 111 757