Will high fever convulsions in babies harm the brain?

Patient's question:

Patient Age: One and a half years old
Description of Symptoms: The baby had a high fever and convulsions a few days ago, accompanied by symptoms such as strabismus and spitting up white foam, which lasted for about 5 minutes. Please ask if this will damage the baby's brain and affect his intelligence? Urgent, urgent, urgent.

Doctor's answer:

Once in a while it won't be a problem. But don't let it happen often.