Ch 14/15 Racial, Age Dermatology

Question 1

Melanine Production

Answer 1

-Tyrosinase is rate limiting in coversion of dopa to dopaquinone, eventially to melanin

Question 2

Hyperpigmentation/Hypopigmentation

Answer 2

• Effect therapy, limit cryo and early abx in acne

- Leporosy and vitiligo can cause hypopigmentation

Question 3

Pitaryaisis Alba

Answer 3

Commonly caused by eczema with light scale

-Often improves after childhood

Question 4

Derm Pap Nigra

Answer 4

Seb K on face, limit freeze for hypopig

Question 5

Pseudobarbe

Answer 5

Ingrown hairs into dermis leads to foreign body reaction

Question 6

Tinea Capatis

Answer 6

Very common, cause of sebborheic dermatitis

• Commonyl tonsurans which does not fluoresce
• Also get culture for diagnosis, but often treat before
• May cause alopecia with broken shafts (black dot alopecia)
• Treatment is griseofulvin

Question 7

Dissecting folliculitis

Answer 7

-Overlaps with hidradinitis sup, acne congoblata (boggy)

Question 8

Keliods

Answer 8

Common in balck and asian

Increase in TGF-B

Question 9

Melanoma

Answer 9

Acral same but higher percentage

-Hutchinson sign

Question 10

Sarcoid and CTCL

Answer 10

• More common but often harder to diagnose

- Look for erythema with follicular raising

Question 11

Erythema Dischormium perstans

Answer 11

-Slate gray with melanin in dermis

Question 12

Infancy

Answer 12

• Harlequin color change

- Vernix, marmota

Question 13

Pregnancy

Answer 13

-Pigmentation
-Skin Tags
Palmar erythema
Decrease cell mediated immunity often improves skin conditions, especially psoriasis

Question 14

Polymorphic eruption of pregnancy

Answer 14

-Prutiritcs urticarial papules and plaques

Question 15

Pemphigoid of pregnancy

Answer 15

Linear C3 with minimal Ig in BM zone

Question 16

Keratoderma Climacticum

Answer 16

-Occurs in middle age women, jeratin changes