If a child is given adhd meds of different types, and none work, is it safe to say that adhd is not the problem?

Needs evaluation: No , he should be evaluated by neuro develop mentalist, psychiatrist or your pediatrician.

It suggests so: Not completely but it certainly raises that possibility. But remember some meds work for 1 patient and not another.But make sure your evaluation is done by a trained professional. Also some patients have add/adhd but also other coexisting diagnoses such as anxiety, ocd , etc.

ADHD is complex.: Adhd must be differentiated from many other conditions & often is comorbid with (accompanies) many other conditions. Response to adhd meds does not confirm a DX & lack of response doesn't mean the person doesn't have adhd. A detailed evaluation & treatment by a skilled professional is necessary. Some children will not respond to the adhd meds before age 6 but may respond later as they develop.