At 15 I was hospitalized for an eating disorder. I saw several mental health professionals while there. The psychiatrist wanted to put me on an antidepressant, but I didn't want one and my parents were okay with that. After that I briefly saw a therapist outpatient. I didn't see another mental health professional for 12 more years when I went to a psychiatrist for concentration and memory issues.
I also guess I technically saw a mental health professional when I saw a family therapist with my family when I was like 5 or something. I really don't know why we went, but I do recall we played games or drew pictures.