One difficulty of scalp ringworm is a kerion, a substantial, overflowing, discharge filled protuberance. If not treated forcefully, a kerion can prompt scarring and lasting male pattern baldness. Scalp ringworm is typically irritated. Regardless of the name, there are no worms required in scalp ringworm, rather the rash structures a textured, round patch that occasionally clears or enhances in the center, in this manner resembling a ring.