Mental issues today are many and varied. And so is the profile of a typical patient. There isn't one because even children can be diagnosed with depression and conditions such as dementia and bipolar mood swings can be diagnosed in people of varying ages.
And a spin-off from so many of the mental health problems in people is the family member affected by the condition. A teen with depression for example can mean a large amount of stress for his or her worrying parents.
In fact, it is not uncommon for family members of a patient with mental health problems to seek medical assistance for the stress they are suffering worrying about their loved one.
Before going to your mental health residential treatment center, you would do well to visit your family doctor and explain your situation to him or her. GPs are well-known for the vast list of contacts in relevant areas of mental health and their advice is most likely to be helpful.
If they can't recommend a specialist, and that would be very rare, they will know someone who can. Don't bypass your family doctor.
But sooner or later you will at least investigate your local residential treatment center for those with mental health conditions. They are not all the same but most will have a number of specialists including the following: a psychiatrist, a psychologist, a psychiatric nurse, an occupational therapist, and a social worker. Each has a different role to play and it will help you to know what each does and for which type of condition.