May be due to head traumas or lead poisoning .

there are a range of symptoms. see the source below

good luck

1. Difficulty hearing in noisy situations

2. Difficulty following long conversations

3. Difficulty hearing conversations on the telephone

4. Difficulty learning a foreign language or challenging vocabulary words

5. Difficulty remembering spoken information (i.e., auditory memory deficits)

6. Difficulty taking notes

7. Difficulty maintaining focus on an activity if other sounds are present child is easily distracted by other sounds in the environment

8. Difficulty with organizational skills

9. Difficulty following multi-step directions

10. Difficulty in directing, sustaining, or dividing attention

11. Difficulty with reading and/or spelling

12. Difficulty processing nonverbal information (e.g., lack of music appreciation)

here is a website i like better…

http://www.tsbvi.edu/Outreach/seehear/spring00/centralauditory.htm

that’s where i found the list of symptoms.