trichoscopy basics Flashcards
normal number of hairs coming from one follicle ?
2-3 hairs per follicle
when do we find predominance of 1 hair/follicular unit predominance ?
androgenic alopecia
teelogen effluvium
term used to describe diversity in diameter of hair follicles ?
anisotrichosis
seen in androgenic alopecia
features of telogen effluvium on trichoscopy ?
short regrowing hairs
features of alopecia areta on trichoscopy ?
exclamation mark hair
black dots
yellow dots
trichoscopy findings of trichotillomania
tulip hairs
flame hairs
broom hair
v sign
haiir powder
hairs broken at different lengths
trichoptilosis ( split ends )
black dots
Friar Tuck sign
trichoscopy findings in tinea capitis
corkscrew hairs
comma hairs
zigzag hair
coiled or hook like hair
what must coiled or hook like hair in tinea capitis be differentiated from ?
regrowing hair
disease associated with mites and nits
pediculosis pubis
large keratotic yellow dots present in
discoid lupus erythematous
peripilar sign
brown halo around hair follicles present in androgenic alopecia
inter-follicular white scales ?
psoriasis
inter-follicular dots and globules ?
psoriasis
yellow greasy scales in inter-follicular space ?
sebehrrohic dermatitis
peri follicular scales and tubular casts ?
lichen planopilaris
along with tiny red follicular plaques on scalp
how can you tell from examination iif it is scarring or non scarring alopecia ?
if follicles can be seen - non scarring
no follicles seen - scarring
findings of tractiion alopecia on dermoscopy ?
white dots
what are thee features of frontal fibrosing alopecia ?
absence of follicular opening
perifollicular hyperkeratosis
perifollicular erythema
what is the C/P of short anagen syndrome ?
hair doesn’t grow long
same hair since being born
noticed at a young age
negative pull test
no dystrophic hair
what is the C/P of loose anagen syndrome ?
same as short anagen syndrome
except there is dystrophic hair
what anti hypertensive drug is associated with hair loss ?
lisinopril
ACE inhibitor
medical induced alopecia
