My DS is 4 and there a few things concerning me.
He can't stand it if someone else sings while a song is playing. If you sing along say to a Cbeebies song, he will get very annoyed and upset and sometimes cover his ears.
He used to cover his ears with handdryers but that's a lot better now.
He also gives you hugs with his back turned to you (so backs into hugs, or will run for a hug but immediately turn around)
Fussy with food, but in a child way (won't eat most veg except uncooked carrots)
Fine with clothes etc.
Is this just a quirk or could it be something a bit more?