If a child's hearing aid makes a shrill or piercing noise, you should

immediately remove the hearing aid from the child's ear and check for any visible damage or loose parts. If everything appears to be in good condition, try turning the hearing aid off and then back on to see if the noise stops. If the noise persists, contact the child's audiologist or hearing specialist for further assistance. It is important to address any issues with the hearing aid promptly to ensure the child's comfort and ability to hear properly.