Milestones for an 18-Month-Old Child-Topic Overview - WebMD Milestones for an 18-Month-Old Child-Topic Overview - WebMD Milestones for an 18-Month-Old Child-Topic Overview - WebMD Milestones for an 18-Month-Old Child-Topic Overview - WebMD Milestones for an 18-Month-Old Child-Topic Overview - WebMD