Derm Pics: Common Dermatoses III and IV Flashcards Preview

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Flashcards in Derm Pics: Common Dermatoses III and IV Deck (20)
1

Describe and diagnose

-violaceous (purple tinge) papules with a bit of fine white scale 

4 Ps = purple, pruritic, polygonal, papules

-often flat topped lesions w/ flat white scales 

= Lichen Planus 

2

Describe and diagnose

Flat topped papules on the flexor surface of the wrist (common location), kind of purple w/ a fine scale 

-fine scale pointed to by white arrow 

= Lichen Planus 

3

Descrbe and diagnose: 

-blue box pointing out kebnerization

-purple, polygonal papules

= Lichen Planus

4

Describe and diagnose:

Purple flat topped papules w/ fine white scale and nail findings

-nail findings seen in 10% of Lichen planus pts

Nail findings: thinning of nail plate w/ longitudinal fissuring of the shorted nail plates, violaceous discoloration of periungal area

5

Describe and diagnose:

Anular patches with elevated scaling border and central clearing 

= Tinea Dermatophytosis (ring worm) 

6

Anular patches with elevated scaling border and central clearing 

= Tinea Dermatophytosis (ring worm) 

7

Describe and diagnose

Onychomycosis (nail involvement) of tinea dermatophytosis 

-yellow (discoloration) crumbly (immediately think fungal), thick, subungal debris

 

8

= Dysplastic nevi

-irregular appearing (dont follow ABCDE, often easily confused w/ melanoma) melanocytic nevi w/ cytologic/architectural atypia => diagnosed (and differentiated from melanoma) w/ biopsy

9

Typically fried egg appearance of dysplastic nevi 

10

Describe and diagnose:

small monomorphic vesicles not on a erethematous base that don't look easy to pop

= Dyshydrotix eczema

-most classic presentation = sides of fingers 

11

Small flat topped monomorphic paples

= flat warts

12

Oil spots and pitting = classic nail findings of psoriasis

-psoriasis pts w/ nail findings are at increased risk for psoriatic arthritis 

-also psoriasis pts at increased risk for CVD

13

= Seborrheic keratosis  

Verrucous plaque, well demarcated border, looks "stuck on" (like you could peel it off) 

14

Psoriasis

-ask about joint pain and counsel on CVD risk

15

= Seborrheic dermatosis

-erythematous patch (flat), yellow, characteristically in the nasolabial fold 

16

Inverse psoriasis

-folds of the skin 

17

Malignant melanoma

-asymmetrical

-irregular borders

-multiple colors

 

18

Lentigines = harmless hyperplasia of melanocytes in the epidermis

19

-lightly erythematous to tan or pink, generally flat or slightly raised 

= Actinic Keratosis 

20

Actinic Keratosis

Lightly erythematous to tan/pink flat and slightly raised

-superficial scale w/ roughened sand paper feeling

-scale can accumulate to form cutaneous horn (seen on answer of this card) = keratotic protuberance

^biopsy hyperkeratotic areas for potential squamous cell carcinoma