Structure of Hair
Arrector pili
is a minute, involuntary muscle fiber in skin attached to the base of the hair follicle.
Phases of Hair Growth Cycle
Anagen, Catagen, Telogen
Abnormal hair loss is called
Alopecia
Technical term for dandruff
Pityriasis Capitis Simplex
infestation of the hair and scalp with head lice is
Pediculosis capatis
Cuticle, Cortex, Medulla
Anagen Phase
growth phase, new hair is produced
Androgenic Alopecia
hair loss that occurs as a result of genetics, age, hormone changes
Pityriasis Steatoides
severe form of dandruff that is characterized by an accumulation of greasy or waxy scales mixed with sebum
carbuncle
an acute deep seated bacterial infection in the subcutaneous tissue.
Side bonds are three types which are
Hydrogen, Salt, Disulfide
Catagen Phase
transition period between the growth and resting phase of hair strand.
An autoimmune disorder that causes the affected hair follicles to be mistakenly attacked by the persons own immune system
Alopecia Areata
Tinea
Medical term for wingworm
furuncle
a boil, acute bacterial infection of hair follicle, producing constant pain.
Also known as cross bonds
Side Bonds
Telogen Phase
Resting phase, final phase of hair growth cycle
Also known as male pattern baldness
Androgenic Alopecia
Tinea Capatis
wingworm of the scalp
The ability of the hair to stretch and return to its normal length without breaking
Hair elasticity
What part of the hair shaft is naturally missing in some people
Medulla
Average growth of hair per month
1/2 inch a month
The only FDA approved hair loss treatments, proven to stimulate hair growth
Minoxidil, Finasteride
fungal infection of the bearded area of the face
Tinea Barbae
Hair density
refers to the number of individual hair strands per square inch of scalp area