I see this is an old question. I hope you had your questions answered and were able to find help for this back then 4yr old.

I hope all is well with your son.

A speech pathologist should be able to give you an assessment to rule out stuttering (some children who stutter use whole words or phrases or can have verbal tics.) If you look at the Speech Pathology Australia website there is an option to search for Speech Pathologists’ in your area.

I like this psychiatrist blog and here’s her post on tics: drkaylenehenderson.com/expert-tips-for-childhood-tics/
Kids can often grow out of tics and they can sometimes occur more around stressful

yeah do see the doc. i meant google the signs to see if you should see the doc. hopefully it is all good.

dO SEE YOUR DOCTOR AND GET A SPECIALIST REFERRAL then you will know once and for all and you wont be wondering.

yeah i am not sure, maybe you should google the signs.

I would maybe speak to your doctor and get a referral to a paediatrician as you can wait up to six months to get in