No Stain, No Gain
The Young and the
Restless
Structure and Function
Bugs and Drugs
Derm Potpourri
100

If in doubt, a Ber-EP4 stain is useful for highlighting this common cutaneous neoplasm

BCC

100

Acrodermatitis enteropathica is characterized by a deficiency of this nutrient

Zinc

100

This is the thin layer of cells in the epidermis lying above the spinous layer but beneath the stratum corneum, reduced or absent in psoriasis.

stratum granulosum

100

Terbinafine belongs to this class of antifungals, which target the enzyme squalene epoxidase

Allylamines

100

This three letter abbreviation refers to guidelines on when to perform Mohs

AUC

200

If a Fite stain is positive, the organisms are highlighted in this color

Red

200

This common birthmark is also called a “stork bite” when it occurs on the occiput

nevus simplex or salmon patch

200

This skin cell type is highly sensitive to cryosurgery, with cell death occuring around -5 C

melanocyte

200

Doxycyline binds to this ribosomal subunit

30S

200

This is the phase of a clinical trial which takes place after a drug or treatment has been approved by the FDA

Phase 4, post-marketing surveillance

300

This immunostain highlights B cells. Also the target for the drug rituximab.

CD20

300

This is typically the earliest skin finding in tuberous sclerosis 

Hypopigmented macules, or ash-leaf spots

300

A target of botulinum toxin treatment, this muscle innervated by the temporal branch of the facial nerve is responsible for horizontal forehead wrinkles

frontalis

300

DAILY DOUBLE

This genotype of T. mentagrophytes is a sexually transmitted variant of tinea that often requires prolonged treatment

Genotype VII

300

This non-absorbable suture has excellent ease of handling, high tissue reactivity, and is most commonly used on mucosal surfaces

silk

400

Von Kossa and Alizarin red are special stains that highlight this substance

Calcium

400

This is the FDA-approved minimum age for treating nodulocystic acne with isotretinoin

12 years

400

Sensation in the first webspace of the foot is primarly provided by this specific nerve 

deep peroneal/fibular nerve

400

Larva currens is a cutaneous sign of infection with this organism 

Strongyloides

400

DAILY DOUBLE



The word “laser” is actually an acronym for this

Light Amplification by Stimulated Emission of Radiation

500

CD207 is an immunostain that highlights the Birbeck granules in this cell type

Langerhans

500

This X-linked disorder is characterized by the triad of immunodeficiency, thrombocytopenia, and eczema

Wiskott-Aldrich

500

Varicose veins can be treated with this sclerosing agent of the detergent class, but it carries the highest reported risk of anaphylaxis

sodium morrhuate

500

This viral oncoprotein encoded by high risk HPV subtypes targets the destruction of p53

E6

500

This is the specific mechanism of action of local anesthetics such as lidocaine 

Inactivation of voltage-gated sodium channels