Ch 13 Regional Dermatology

Question 1

Hair Growth

Answer 1

From placode mesenchymal cells in development

-Matrix is where melanocytes enter to cause color

Question 2

Hair Cycle

Answer 2

-Anagen: Growth
-Catagen: Stop growth and clubbing of nail
Telogen: Shedding

Question 3

Localized alopecia

Answer 3

Nonscarring: Areata, Traction, Human ringworm, Trichitlomania
Scarring: burns, LE, Ringworm non human, Aplasia Cutis, Cicatrical BC, Lichen planus, Sarcoid, pseudopalade

Question 4

Areata

Answer 4

T cell infilatrate around hair bulbs

• HLA D and DOwns are associated
• Exclemation mark short hairs that taper towards scalp
• Syphilis may cause moth eaten hair, Margin is bad prognosis

Question 5

Androgenetic

Answer 5

• Turn to velus

- Genetic

Question 6

Traction

Answer 6

-May cause folliculitits and maybe scarring

Question 7

RIngowowm

Answer 7

Scarring when non human strains

Question 8

Scarring

Answer 8

Discoid LE

-Lichen Planus, morphea

Question 9

Telogen Efflucivum

Answer 9

-Stress causes hairs to synchronize in catagen and then shed diffusely
Can be seen accompanying beaus lines

Question 10

Hypohidriotic Ectodermal Dysplasia

Answer 10

• Teeth, Nails, Hair
• Can’t sweat
• XLR

Question 11

Netherton

Answer 11

• Ca metabolism

- Also causes icthyosis

Question 12

Hirsuitism

Answer 12

• Most is familial and idiopathic
• PCOS common cause
• If Virilization look for cause

Question 13

Beckers Nevus

Answer 13

-Hypertrichosis

Question 14

Cosmetics

Answer 14

PPD can cause contact allergy

Question 15

Hypertrichosis

Answer 15

Anorexia
Drugs: Cyclosporin
Cutaneous Porphyrias
FAS/Phenytoin
Malignancy leads to lanugo

Question 16

Nail Structure

Answer 16

Nail Fold which houses the matrix which makes that plate that sits on the bed

Question 17

Onychogryphosis

Answer 17

-Thickening of the nail due to long term repeated trauama

Question 18

CT diseases

Answer 18

Can cause telangectasia

Question 19

Lichen Planus

Answer 19

Longitudinal Grooves with thinning

Question 20

Acute Paronychia

Answer 20

• Pussy infection beneath nail, commonly near the matrix and initial plate
• Commonly caused by staph

Question 21

Chronic Paronychia

Answer 21

Folds are tender and swollen, often occupational

Question 22

Dermatophytes

Answer 22

• Commonly spread from tinea pedis
• Causes onychomycosis and crumbling of nail
• Don’t treat unless symptomatic

Question 23

Periungal Fibroma

Answer 23

Tuberous sclerosis

Question 24

Myxoid Cysts

Answer 24

Cause longtidunal groove in nail

Question 25

Yellow Nail

Answer 25

-Associated with lyphatic obtrucion and pulmonary edema

Question 26

Lichen Planus

Answer 26

Lacy white lesions in mouth - Hep B/C should be checked as well as anti mitochondrial Ab - Ulcerative form can lead to SCC

Question 27

Candidiasis

Answer 27

- Treat with imidazoles | - Many causes

Question 28

Pemphigus Vulgaris

Answer 28

- Mouth ulcer that doesn't heal after time | - Also cicatricial pemphigoid causes mucus membrane lesions

Question 29

Apthous Ulcers

Answer 29

Bechets, Chrons, Lupus, HIV, Vitamin Deficency

Question 30

Peutz Jeghers

Answer 30

-Hyperpigented Macules on lips leads to internal malignancy

Question 31

Benign Mouth Lesions

Answer 31

Fox-Fordyce are sebaceous glands in mouth Mucocele Pseudoxanthoma elasticum

Question 32

Cowdens and HHT

Answer 32

Cowdens is fibrous papules | -HHT is telangectasia that can bleed

Question 33

Black Hairy Tongue

Answer 33

Pigmentation and hypertrophy of filiform papillae leads to thick tongue -Brush teeth

Question 34

Smooth TOngue

Answer 34

Malabsorption

Question 35

Fissure Tongue

Answer 35

Development, Downs, Trauma, Smoking

Question 36

Geographical

Answer 36

Atopic, Familial, Psoriasis | -Tx with steroids

Question 37

Hairy Leukoplakia

Answer 37

-EBV in pts with aids, give HAART

Question 38

Macroglossia

Answer 38

-Amyloid, Thyroid

Question 39

Glossydonia

Answer 39

-DM, Drymouth, Candidiasis

Question 40

Furred Tongue

Answer 40

Hypertrophy of filiform papillae

Question 41

Lichen Sclerosis

Answer 41

- Common on genetalia and anal region | - Can cause phimosis and lead to cancer

Question 42

Lichen Planus

Answer 42

Can have lesions on genetalia, - Look for wickhams striae - Always confirm with mouth lesions

Question 43

Pruritis

Answer 43

Many causes, don't itch, can cause lichenification

Question 44

Pearly penile papules

Answer 44

angiofibromas of glans

Question 45

Fordyce

Answer 45

Ectopic sebacous on glans

Question 46

fixed drug

Answer 46

commonly seen on penis

Question 47

SCC

Answer 47

- Can arise from bowen disease or erythroplasia of queryt - HPV associated - Penectomy or topical immunotherapies or Mohs

Question 48

Eryhtrasma

Answer 48

Brown patches on upper thighs, often in axillae as well

Question 49

Inverse psoriasis

Answer 49

Gluteal fold

Question 50

Interigo

Answer 50

Maceration