A child's attention is not focused, what tests should be done?

Patient's question:

No

Doctor's answer:

Possible reasons include, bad habits formed by the child, lack of nutrients, or manifestations of neurological lesions. I suggest:
1. First, take the child for a blood electrolyte test or blood trace element test;
2. Visit a pediatrician to determine if there are any other underlying conditions.
3. Also consider whether the child may have developed such bad habits by interacting with mischievous peers around them.