I am currently on medication for meltdowns/anxiety. I wouldn't say its a last resort, but therapy is defiantly more important.
Medication that lessens anxiety or frustration/irritability WILL be beneficial to him if they work properly.
You can always try a small dose of an anxiety medication, wait a few weeks and see how he does.
You can always take him off the medication if it isn't helping.
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Diagnosed with
F84.8 (PDD-NOS) 2014
F33.1 Major Depressive Disorder, recurrent, moderate.