A ringworm is a condition creating small, red, ring-shaped marks on the skin. It is a fungal infection spread easily, but can be treated by a physician.
Nails are made of dead cells and a protein called keratin. Hair is made of the same substance as nails and is a threadlike structure. Hair protects skin from sun rays and maintains body temperature. A person can have up to 200,000 hair on their head. Each hair grows from a follicle, a depression on the dermis that contains nutrients for the hair