30 essential warning signs of behavioural changes in children. How to identify and manage these challenges effectively for better support. Published On: 12 Jul 2026, 11:00 am IST What are the red flags for toddler behavior? Image courtesy: Adobe Stock The way one acts, particularly toward others, in response to specific situations or stimuli, is referred to as behaviour. Furthermore, a developing child, especially an adolescent, goes through significant physical and emotional changes.