Avoiding certain foods
Frequent food restriction
Obsessive or extreme eating behaviors
Notable changes in behavior, especially in young children
Frequent trips to the bathroom, especially after meals
Increased focus on physical appearance
Notable weight change
The National Eating Disorders Association is a good starting point for many adults.
https://www.edreferral.com/ offers a search feature to locate treatment providers around the U.S.
WithAll provides more information, resources, and financial support for those seeking treatment.