Hindi agad sign ng autism yan, maraming bata ang gumagawa ng repetitive movements like head banging or hand flapping out of curiosity, frustration, or pagkukunwari lang talaga, si bunso ko dati ganyan din, ngayon okay na siya. Pero since concerned ka na, I'd really suggest checking with your pediatrician para sure lang, lalo na kung kasama ng iba pang behaviors like hindi sumasagot sa tawag o hindi gumagawa ng eye contact, kasi alam namin na early intervention is key kung may something. Observo mo muna kung regular lang ba yan o palaging nangyayari, at anong oras, minsan stress lang talaga or boredom ang reason.