Hair & Nails Flashcards Preview

DERMATOLOGY Premade cards > Hair & Nails > Flashcards

Flashcards in Hair & Nails Deck (75)
Loading flashcards...
1

Half and half nails

Chronic renal disease (also called Lindsay's nails)

Proximal 1/2 with white zone, distal 1/2 with red brown zone

2

Nail finding in kidney disease

Half and half nails (Lindsay's nails), proximal 1/2 with white zone, distal 1/2 with red brown zone

3

Proximal 1/2 with white zone, distal 1/2 with red/brown zone

1/2 and 1/2 nails (Lindsay's nails) - found in renal disease

4

Beaded appearance of hair due to periodic thinning of hair shaft (like necklace with string of beads)
Normal at birth, develops in a few months with short fragile brittle hair

Monilethrix

5

Large uneven bubbles in hair due to trauma

Bubble hair

6

Bamboo hair

Trichorrhexis invaginata

7

Two paint brushes against each other (incomplete fracture with frayed ends), seen in which diseases?

Trichorrhexis nodosa
*Seen in Nethertons, Menkes disease, TTD, arginosuccinic aciduria

8

Name the hair finding found in Nethertons, Menkes, TTD, and arginosuccinase deficiency?

Trichorrhexis nodosa

9

Trichorrhexis Nodosa found in what disease(s)?

Menkes
TTD
Netherton
Arginosuccinase deficiency

10

Alternating light and dark bands under polarizing light

Trichothiodistrophy (due to sulfur deficiency), found in TTD duh

11

Twisting and flattening of the hair fiber

Pili torti

12

Pili torti found in what disorders

Bjornstad, Crandall Syndrome, Menkes, Netherton

13

Clean transverse fracture of hair shaft, mechanical or aquired

Trichoscisis

14

What disease is trichoscisis found in?

TTD

15

Name the hair findings in Trichothiodystrophy

Trichoscisis
Trichorrhexis nodosa

16

Name the hair findings in Menkes

Pili torti (most common)
Trichorrhexis nodosa

17

Pili torti
Trichorrhexis nodosa
Short brittle "steel wool" hair
Cupid's bow upper lip
Torturous arteries
Progressive CNS deterioration

Menkes Disease, due to defect in copper transporter

18

Pili trianguli et canaliculi

Uncombable Hair syndrome

19

Spun glass hair

Uncombable hair syndrome

20

Triangular cross-section with central linear groove along one side

Pili trianguli et canaliculi (seen in uncombable hair syndrome)

21

Spun glass hair (Pili trianguli et canaliculi) is due to premature keratinization of what part of the hair follicle?

Inner root sheath

22

Which part of the hair is derived from the mesoderm?

Dermal papilla

23

The infundibulum of the hair extends from the surface of the epidermis Down to which structure?

Opening of sebaceous gland

24

The isthmus extends from the opening of the sebaceous gland Down to what structure?

Insertion of arrector pili muscle (bulge)

25

Where is the bulge located in the hair follicle?

At the junction of the isthmus and the inferior segment. It is where the arrector pili muscle inserts

26

The outer root sheath occurs where in the hair follicle?

EVERYWHERE! It's just that going up during the isthmus it will undergo trichilemmal differentiation, and then in the infundibulum is essentially keratinized like the rest of the epidermis

27

The inner root sheath is found in what part of the hair follicle?

Starts in the dermal papilla but disintegrates by the time it reaches the bulge which is in the isthmus

28

Which portion of the hair follicle is the inner root sheath never present?

The infundibulum

29

How long is anagen phase for each hair?

2-6 years

30

In which phase of the cell cycle are hairs located higher up in the epidermis?

Telogen