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5 alpha-reductase - Enzyme within hair follicles
ABHRS - American Board of Hair Restoration Surgeons
Alopecia - General medical term for hair loss.
Many sub categories of alopecia exist.
Alopecia areata - Hair loss disorder
characterized by patchy smooth areas of hair loss on scalp. Affects about
2% of population. Can occur slowly or with a sudden onset. Believed to be an
immune disorder, although the exact cause is unknown, where mistaken signals
are sent to the body and the hair is rejected.
Alopecia totalis - Hair loss affecting the entire scalp
Alopecia universalis - Hair loss on entire body.
Hair follicles present but devoid of hair.
Anagen phase - Active growth
Androgenetic alopecia - Hair loss related to
gender. Usually occurs in a specific pattern
CAG's - Coronal Angled Grafting. Angling the
recipient sites to get the most natural growth.
Candidate selection - Determining qualities an
individual has that would make them suitable for hair restoration.
Crown or vertex - Mid back or top of the scalp
DHT - Dihydrotestosterone. The by-product of
testosterone that is responsible for male pattern baldness.
Dissection - Cutting down the strip of donor
tissue into follicular unit grafts
Donor area - The area in the back of the scalp
from which the grafts are harvested.
Donor strip - The piece of tissue harvested
from the back of the scalp containing the necessary grafts.
Follicle - Single unit of hair
Follicular unit - A hair graft containing between
1-3 hairs per follicle. The amount of hair per follicle depends on the individual.
Frontal forelock - Isolated area of existing
hair in the front hairline where surrounding hair has been lost.
Also called an "island" or "frontal tuft".
Frontal recessions - Frontal loss of hair
presenting as deep "V"s in the front hairline
FUE - Follicular unit extraction
Graft - A hair follicle unit containing between 1- 3 hairs
ISHRS - International Society of Hair Restoration Surgeons
Ludwig scale - Typical Female pattern hair loss scale
Microscopes - Devices used to dissect the tissue
into follicular unit grafts
Miniaturization - The process of hair loss by
which the follicle begins to shrink and the hairs become smaller, finer textured
and eventually the follicle dies.
Norwood Scale - Typical Male pattern hair loss scale
Prone pillow - Pillow used during removal of donor tissue.
Similar to a pillow used for massage.
Recipient area - Area where the grafts are
placed during the hair transplant.
Session - A hair transplant surgery of grafts.
Site - Tiny incision, made with a needle,
where the follicular unit grafts are inserted.
Surgical staples - Used to close the surgical
incision where the donor area was removed.
Technician - Medical assistant to the hair transplant surgeon. Duties are varied, but include dissecting the tissue into single follicles and inserting the grafts into the recipient sites.
Telogen effluvium - Acceleration or "shock" loss of hair following a transplant. Diffuse hair shedding. Any condition that shifts the normal distribution of hair follicles in active phase to a higher percentage of hair follicles in the resting phase.
Sudden - Rapid or abrupt onset due to bodily stress or high fever.
Delayed - Following several months of physical or emotional stress, such as illness, childbirth, etc.
Chronic - Occurring over several years or months
Telogen phase - Resting phase
Terminal Hair - Large, normal hair not affected
by male pattern baldness
Traction alopecia - Hair loss due to tension
on scalp from tight braids, ponytails, hair extensions, etc.
Trichodynia - Painful hair. Hair loss associated
with painful needle pricked feeling.
Vellus Hair - Small fine textured hairs.
Lighter in color, smaller in diameter, finer textured than terminal hairs.
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