My name is ***** ***** I am an experienced criminal
If during the course of a psychiatric assessment, voluntary or involuntary, the physicians determine that a patient is a danger to himself or others, they can hold him past the assessment period, without the patient's consent, and treat him to address his condtion. You may feel that he'd be better served by counseling, but if the doctors don't they can keep him there and prescribe a course of treatment that they believe would be best for him, in their medical judgment.
State laws allow for this. Your son will be held and treated until he has a hearing to determine what will happen to him from there. If the doctors find that he can handle outpatient treatment and counseling, they can release him at that time. But if they think further inpatient care is necessary, they will want to keep him.
He's entitled to have a lawyer at that hearing and you should see to it that he gets a lawyer who is experienced with involuntary commitment issues involved as soon as possible. If you're not sure where you can find one, contact the North Carolina Bar Association's Lawyer Referral Service.