What to do for 4 yr old when he gets continual erections?

It's normal for young boys to experience erections as part of their development. If your 4-year-old has frequent erections, it's usually not a cause for concern, as this can happen during play or even while sleeping. You can calmly explain that this is a natural part of growing up and encourage them to focus on other activities when it occurs. If you have any concerns about their health or behavior, consider consulting a pediatrician for guidance.