Carol:
The condition's full name is black-dot ringworm, or tinea capitis. This is a fungus (not a worm!)infection of the scalp, which causes the hairs to break off and leave little black dots. It's easy to treat with an oral antibiotic called griseofulvin, which we have used in kids for years. It's true that the fungal strain now common is more common in blacks, for reasons which are unclear. But soon he won't have it anymore, and he won't have permanent hair loss from it either.
Best.
Dr. R