Derm

Question 1

flat spot on skin

Answer 1

• macule < 1 cm

- patch > 1 cm

Question 2

nonpustular, nonvesicular elevated lesion on skin

Answer 2

• papule < 1 cm

- nodule > 1 cm

Question 3

small blisters

Answer 3

• vesicle < 1 cm

- bulla > 1 cm

Question 4

collection of leukocytes in epidermis

Answer 4

-pustule

Question 5

broad, elevated flat lesions

Answer 5

-plaque > 1 cm

Question 6

Atopic dermatitis- lesions?

Answer 6

• erythematous papular/patch
• areas of scaling
• pruritic
• patchy, dry, scaly eruptions
• facial rash on cheeks
• trunk and extremities, sparing diaper area

Question 7

Atopic dermatitis- in who?

Answer 7

• 10% of all children

- eruption distribution changes w infant vs toddler vs adult

Question 8

Atopic dermatitis- complications

Answer 8

• infection (from itching)
• exfoliative erythroderma
• mental and emotional anguish w growth disturbance

Question 9

Atopic dermatitis- pathogenesis

Answer 9

• T-cell
• food allergy
• aeroallergens
• irritant contactants
• histology- spongiosis, eos, LSC

Question 10

Atopic dermatitis- tx?

Answer 10

• moisturize
• avoid irritants
• avoid known food allergies
• antipruritic agents

Question 11

Cellulitis

Answer 11

• acute, rapidly spreading nonsuppurative infection of skin and soft tissue
• tender, warm poorly demarcated boggy plaque
• extremity
• trauma
• fever, ill-appearing

Question 12

Cellulitis- pathogenesis

Answer 12

• trauma to extremity
• concurrent ulcer
• risk factors- stasis dermatitis, lymphedema
• staph aureus or strep pyogenes

Question 13

Cellulitis- tx

Answer 13

• 1st gen cephalosporin, macrolide, or clindamycin

- elevation

Question 14

Cellulitis- in who?

Answer 14

• young to old

- anywhere on body

Question 15

erythema nodosum- clinical findings

Answer 15

• 20-30 yo
• symmetric erythematous nodules and plaques on ant LE’s
• tender nodules and plaques on b/l knees, ankles, and shins

Question 16

erythema nodosum- pathogenesis

Answer 16

-hypersensitivity response- infection, medicine, herbs, vitamins

Question 17

Psoriasis- clinical

Answer 17

• slightly elevated, scaly plaques w silvery surface on an erythematous base
• Koebner- scratch/trauma recreates it
• Auspitz-peel scale, pinpoint bleeding
• Woronoff’s ring- after, stain is left behind

Question 18

psoriasis- histology

Answer 18

• acanthotic epidermis w club shaped rete ridges

- absent granular layer!!

Question 19

Psoriasis- common types

Answer 19

• plaque
• pustular
• guttate

Question 20

psoriasis- plaque type

Answer 20

• well demarcated scaly plaque
• elbows, knees, belly button
• coin shaped

Question 21

Seborrheic dermatitis

Answer 21

see picture

Question 22

Nummular eczema

Answer 22

(coin shaped)

-occurs in ppl who dont moisturize

Question 23

lichen planus

Answer 23

see picture

Question 24

psoriasis- pustular type

Answer 24

• sterile sheets of pustules on an erythematous base

- painful w fever

Question 25

AGEP

Answer 25

(Acute generalized exanthematous pustulosis)

Question 26

pustular drug eruption

Answer 26

see picture

Question 27

Psoriasis- guttate type

Answer 27

• children, young adults
• post streptococcal infection
• trunk w sparing of palms and soles

Question 28

Herpes zoster- in who

Answer 28

• children and adults > 55-60 most common
• react varicella zoster virus
• local radicular pain 2-3 days prior to eruption

Question 29

Herpes zoster- pathology

Answer 29

-steel gray nuclei multinucleated giant cells w eosinophilic intranuclear inclusions