allopecia Flashcards
how long is the telogen phase?
is always 3 MONTHS
most scalp hairs are in what phase of the hair cycle
anagen
how many follicles arrive to the end of telogen by the end of each day
about 100
woman presents with widened center scalp, pull test negative
androgenetic alopecia
androgenetic alllopecia in men and women is characterized by
minituarization of the hair
where does hair loss start in men
temple and vertex
women do NOT experience hair loss due to androgenetic allopecia where?
in frontal scalp
what can you consider for treatment for hair loss in women and in men?
Minoxidil
spironolactone + OCP
Men: Minoxidil, finasteride
circular areas of hair loss for 5 months,
+++ shedding as hair is falling out,
smooth areas of hair loss
allopecia areata
what is the cause of allopecia areata
autoimmune attack on hair bulb/not on stem cells
most common nail finding in allopecia areata
pitting
first line treatment for alopecia areata
Steroids/topical or intralesional
Diffuse loss of hair everywhere, no itching or burning, Usually 3 months after a trigger, Pull test positive
Telogen effluvium
drugs that can cause telogen effluvium
beta blockers
lithium
SSRIs
a positive pull test is
when you pull on 50 hairs, 5 or more come out