a lump on my head that itches
They appear in anywhere you have hair on your head (eyebrows for example)
because it might have lice or other bugs eating its head skin
You'd have very colorful head lice. You'd also probably have spots where the dye doesn't hit your hair because the lice and their eggs are on top of your hairs.
You go to your local cvs and get top care product and follow instructions
"Genital Lice" would be something called "Crabs" it lives in your genitals, but doesn't last very long off the body. In other words for Crabs it can be called HPV (Human Papilloma Virus) and it can not be cured. As for the lice that lives on top of the head, then there is really no other word for it but lice, unless you want to call them "head bugs."
tenderness
The head person.
Your head gasket or cylinder head is cracked.
Someone who has very little or no hair on the top of their head.
the head If you mean a drummers drumstick it is called the tip.
Markings mean nothing on a GSD's head.