Is any way of distinguishing between the quirky personality traits of a young child and the signs of Aspergers/Autism or something else? My 3.5 year old has some different traits to his siblings and I don’t know how to distinguish between just being different or if there is actually something a little deeper that I should investigate further. He is highly emotional, especially when tired, very particular about certain things, always asking the same things over and over, asking questions about all sorts of very random things and quite introverted at times yet overly exuberant at other times. His speech is okay. Hoping or a little insight from other mums. Thank you.