Head lice are tiny insects that can live on your scalp. They’re highly contagious and can cause itching and bumps on your scalp. Scratching may also result in bleeding. If you have lice ...
You may not know for sure which one you're dealing with, mainly because it's not easy to get a good look at your own scalp, and most bumps on your head will feel like—just that—a standard bump.
around 60% reported head-related overuse injuries, with 31% experiencing hair loss and 24% developing painless bumps on their heads. Scalp inflammation was present in approximately 37% of these cases.