My friend has ring worm or something like that what she he use?!
Question: Blue Star Ointment
Answers: Blue Star Ointment
If it is a ringworm, they could use clear nail polish to "smother" the ringworm, OR walnut juice, OR they could make a poultice out of basil.
She can get an anti-fungal cream from the pharmacy. Some stuff for athletes foot will work.
Information on ringworm can be found at the useful source below.