Ask HN: What are your thoughts on taking your kid to a psychiatrist?

My older kid is not some medical case, you could say he is normal, but still he is very childish and always behaves like a cartoon of himself, he never speaks in his regular voice, and in fact I have to tell him to speak normal, I get the feeling he has a problem of low self esteem and wondered if anybody has experience with psychiatrists and if your would recommend it in this case.