K
resting phase of the hair growth cycle
TELOGEN PHASE
waxy or greasy dandruff
PITYRIASIS STEATOIDES
chronic bacterial infection of the bearded areas of the face
SYCOSIS VULGARIS
ringworm of the bearded areas on the face
TINEA SYCOSIS
hair that grows in a circular pattern
WHORL
technical name for ringworm
TINEA
amount of movement in the hair strand; straight, wavy, curly, and coiled
WAVE PATTERN
dry, sulfur-yellow, cuplike crusts on the scalp seen in tinea favosa
SCUTULA
technical term for dandruff
PITYRIASIS
dry dandruff
PITYRIASIS CAPITIS SIMPLEX
technical term for knotted hair
TRICHORRHEXIS NODOSA
are made of chemical units called amino acids
PROTEINS
soft, downy hair that appears on the body
VELLUS HAIR
also known as barber’s itch, a superficial fungal infection that commonly affects the skin; it is primarily limited to the bearded areas of the face and neck or around the scalp
TINEA BARBAE
the technical term for split ends; hair conditioning and oils will smooth split ends, but the only way to remove them is to cut them
TRICHOPTILOSIS
also known as cross bonds; hydrogen, salt, and sulfur bonds in the hair cortex
SIDE BONDS
the science of dealing with hair, its diseases, and its care
TRICHOLOGY
long chain of amino acids linked by peptide bonds
POLYPEPTIDE CHAIN
long hair found on the scalp, beard, chest, back, and legs
TERMINAL HAIR
a physical side bond with the hair cortex
SALT BOND
a fungal infection of the scalp characterized by red papules, or spots, at the opening of the hair follicles
TINEA CAPITIS
melanin that gives red to blond colors to hair
PHEOMELANIN
ringworm characterized by dry, sulfur-yellow crusts on the scalp
TINEA FAVOSA
a chronic inflammatory form of folliculitis known as razor bumps resembling folliculitis papules and pustules; generally accepted to be caused by ingrown hair
PSEUDOFOLLICULITIS BARBAE