Dermatology Flashcards
A young, obese patient presents with a velvety rash in the axilla and back of the neck (pictured below). What pathologic condition is likely associated with this rash?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/375/834/599/q_image_thumb.png?1646670639)
Insulin resistance
this rash is consistent with acanthosis nigricans
![](https://s3.amazonaws.com/brainscape-prod/system/cm/375/834/599/a_image_thumb.png?1646670682)
Cellulitis is typically caused by […] (nonpurulent) or […] (purulent)
Cellulitis is typically caused by Streptococcus pyogenes (nonpurulent) or Staphylococcus aureus (purulent)
![](https://s3.amazonaws.com/brainscape-prod/system/cm/375/834/695/a_image_thumb.png?1646670712)
Diagnosis of Tinea versicolor is confirmed with […], which demonstrates a classic “spaghetti and meatballs” appearance.
Diagnosis of Tinea versicolor is confirmed with KOH preparation, which demonstrates a classic “spaghetti and meatballs” appearance.
![](https://s3.amazonaws.com/brainscape-prod/system/cm/375/834/739/a_image_thumb.png?1646670750)
Do cherry hemangiomas typically regress spontaneously?
No
Patients that have sudden onset of multiple seborrheic keratoses should be evaluated for underlying […].
Patients that have sudden onset of multiple seborrheic keratoses should be evaluated for underlying internal malignancy (e.g. GI).
Leser-Trelat sign
Porphyria cutanea tarda is caused by a deficiency of the enzyme […].
Porphyria cutanea tarda is caused by a deficiency of the enzyme uroporphyrinogen decarboxylase.
may be detected as elevated plasma or urine porphyrin levels
![](https://s3.amazonaws.com/brainscape-prod/system/cm/375/834/871/a_image_thumb.png?1646670831)
Seborrheic dermatitis is associated with HIV and central nervous system disorders, especially […].
Parkinson disease
![](https://s3.amazonaws.com/brainscape-prod/system/cm/375/834/918/a_image_thumb.png?1646670870)
Squamous cell carcinoma is characterized histologically by invasive cords of squamous cells with […].
Squamous cell carcinoma is characterized histologically by invasive cords of squamous cells with keratin pearls.
![](https://s3.amazonaws.com/brainscape-prod/system/cm/375/834/971/a_image_thumb.png?1646670907)
Squamous cell carcinoma is the most common malignancy of the […] lip.
Squamous cell carcinoma is the most common malignancy of the lower lip.
versus basal cell carcinoma, which typically affects the upper lip
The diagnosis of tinea corporis is confirmed with KOH preparation of skin scrapings demonstrating […].
The diagnosis of tinea corporis is confirmed with KOH preparation of skin scrapings demonstrating segmented hyphae.
![](https://s3.amazonaws.com/brainscape-prod/system/cm/375/835/125/a_image_thumb.png?1646670968)
The major risk factor for development of actinic keratosis is chronic […].
The major risk factor for development of actinic keratosis is chronic sun exposure.
![](https://s3.amazonaws.com/brainscape-prod/system/cm/375/835/209/a_image_thumb.png?1646671001)
Vitiligo is often associated with other […] conditions.
Vitiligo is often associated with other autoimmune conditions.
e.g. pernicious anemia, autoimmune thyroid disease, type 1 diabetes, primary adrenal insufficiency, etc.
![](https://s3.amazonaws.com/brainscape-prod/system/cm/375/835/305/a_image_thumb.png?1646671053)
What antibiotic is frequently prescribed for treatment of acne and associated with photosensitivity as an adverse reaction?
Doxycycline
manifests as exaggerated sunburn reactions with erythema, edema, and vesicles in sun-exposed areas
![](https://s3.amazonaws.com/brainscape-prod/system/cm/375/835/378/a_image_thumb.png?1646671091)
What are the “ABCDEs” of malignant melanoma?
A: […]
B: […]
C: […]
D: […]
E: […]
What are the “ABCDEs” of malignant melanoma?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/375/835/443/a_image_thumb.png?1646671139)
A: asymmetric shape
B: border irregularity
C: color variegation
D: diameter > 6 mm
E: evolving
What dermatologic pathology is characterized by widespread thinning of the hair with normal appearing scalp and hair shafts, typically after a stressful event?
Telogen effluvium
e.g. weight loss, pregnancy, major illness; characterized by a positive hair pull test
![](https://s3.amazonaws.com/brainscape-prod/system/cm/375/835/509/a_image_thumb.png?1646671172)
What is the first-line treatment for mild inflammatory acne vulgaris?
benzoyl peroxide + topical retinoids
![](https://s3.amazonaws.com/brainscape-prod/system/cm/375/835/574/a_image_thumb.png?1646671199)
What is the first-line treatment for non-inflammatory comedonal acne vulgaris?
Topical retinoids
may add an organic acid preparation (e.g. salicylic acid) if initial therapy fails
![](https://s3.amazonaws.com/brainscape-prod/system/cm/375/835/612/a_image_thumb.png?1646671228)
What is the first-line treatment for patients with bullous pemphigoid?
High-potency topical glucocorticoids (e.g. clobetasol)
What is the likely causative organism in a patient that presents with the rash below?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/375/835/706/q_image_thumb.png?1646671278)
Poxvirus
this patient has molluscum contagiosum (skin-colored, umbilical papules)
What is the likely diagnosis in a middle-aged patient that presents with a greasy-looking, yellowish, scaly facial rash (pictured below) and increased dandruff?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/375/835/758/q_image_thumb.png?1646671305)
Seborrheic dermatitis
predominantly affects the scalp and face, especially areas with numerous sebaceous glands
What is the likely diagnosis in a middle-aged patient that presents with the lesions below?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/375/835/818/q_image_thumb.png?1646671346)
Cherry angioma
most common benign vascular tumor in adults
What is the likely diagnosis in a patient living in a nursing facility that presents with a 2 x 1 cm skin ulcer overlying the sacral region?
Pressure (decubitus) ulcer
![](https://s3.amazonaws.com/brainscape-prod/system/cm/375/835/876/a_image_thumb.png?1646671386)
What is the likely diagnosis in a patient that develops numerous pruritic, erythematous papules with scattered vesicles/pustules on the finger webs, palms, and wrist creases (pictured below)? The patient also has numerous excoriations on the wrist.
![](https://s3.amazonaws.com/brainscape-prod/system/cm/375/835/940/q_image_thumb.png?1646671412)
Scabies
![](https://s3.amazonaws.com/brainscape-prod/system/cm/375/835/940/a_image_thumb.png?1646671438)
What is the likely diagnosis in a patient that noticed hypopigmented skin lesions on her trunk after returning from a summer vacation in Florida (pictured below)?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/375/835/975/q_image_thumb.png?1646671460)
Tinea versicolor (due to Malassezia infection)
![](https://s3.amazonaws.com/brainscape-prod/system/cm/375/835/975/a_image_thumb.png?1646671482)