Systemic Nail Infections Flashcards
what is melanonychia and is it a normal or abnormal finding?
(black streak) in the nail that is a NORMAL finding; especially common in African-Americans
is longitudinal ridging a normal or abnormal finding?
normal finding that occurs with aging
what is anonychia? what disorders is it seen with?
(absence of nail)
-seen with alopecia areata and nail-patella syndrome
what is clubbing of the nails indicative of?
lung disease (bronchiogenic CA)
what is chromonychia?
color changes in the nail
what is white nail (Terry’s nail) associated with?
hepatic disease
what is Muehrcke’s lines associated with?
hypoalbuminemia
what is Muerhcke’s lines?
paired, narrow white bands that run parallel with the lunula
what is Mee’s lines associated with?
arsenic poisoning
what is Mee’s lines?
striped white bands associated with arsenic poisoning
how do you differentiate btwn Muerhcke’s lines and Mee’s lines?
Mee’s lines tend to be more than 2 lines and is not continuous across the transverse nail plate
what is leukonychia?
white nail
partial leukonychia is very common
blue-green nail indicates what?
pseudomonas infection
subungual hematoma
red half-moon indicates what disease?
CHF
blue half-moon indicates what disease?
hepato-lenticular degeneration (Wilson’s disease)
half and half nail (aka Lindsey’s nail) indicates what disease?
renal disease and azotemia
Differentials for a black streak in the nail?
- melanonychia (common finding in AA)
- melanoma
- subungual hematoma
what is koilonychia? what disease is it associated with?
“spoon-shaped” nail seen with iron-deficiency anemia
what is onycholysis?
separation of nail from its bed
what is “parrot beaking” and what is it associated with?
nails look like a beak curving around the atrophic soft tissue of the tips of teh toe
-seen in scleroderma, or TB
nail pitting is classically seen with what disease?
psoriasis
pterygium formation is seen with what disease?
lichen planus
what is pterygium formation in the nail look like?
overgrowth of cuticle onto nail plate and the nail is split into two portions
splinter hemorrhages are assoicated with what?
subacute bacterial endocarditis
what are Beau’s lines?
single transverse striation that is a depression in the nail seen commonly in patients under going chemotherapy
what is a common nail finding seen in patients with psoriasis?
nail pitting
what nail findings are commonly seen in patients with lichen planus?
pterygium formation
longitudinal ridging
what nail changes are seen in scleroderma?
parrot beaking
