Head lice begin life as very small (about 0.5-millimeter-in-diameter) eggs called nits, which range in color from white to brown. Nits hatch into young lice called nymphs, which take seven to 10 ...

Medically reviewed by Renita White, MDMedically reviewed by Renita White, MD Pubic lice (Pthirus pubis), also known as crabs, ...

NORWAY is at last starting to accept that, when it comes to looking after the fish at its farms, all is not well.