Dermatologist Certificate Cheat Sheet 2026

The 30 highest-yield Dermatologist Certificate facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. What is the mechanism by which UV radiation causes DNA damage leading to skin cancer? → Formation of cyclobutane pyrimidine dimers (CPDs) and 6-4 photoproducts in DNA
2. Which histologic finding is pathognomonic for lichen planus? → Max-Joseph spaces with saw-tooth rete ridges
3. Which histological subtype of basal cell carcinoma carries the highest risk of recurrence and invasion? → Morpheaform (sclerosing/infiltrative) BCC
4. What is the indication of pemphigus foliceus? → Young to middle age adults
5. Calcineurin inhibitors (tacrolimus and pimecrolimus) are used as steroid-sparing agents for which condition? → Atopic dermatitis, especially on the face and intertriginous areas
6. Which dermatoscopic structure is most associated with melanoma? → Atypical pigment network
7. Subepidermal blisters with neutrophilic microabscesses in dermal papillae are histologically characteristic of which condition? → Dermatitis herpetiformis
8. Which of the following treatments for acne would be recommended? → Accutane
9. Ivermectin 1% cream is approved for topical treatment of which skin condition? → Rosacea (papulopustular subtype)
10. What is the most common primary malignant skin tumor worldwide by incidence? → Basal cell carcinoma
11. Impetigo caused by Staphylococcus aureus most characteristically produces which type of lesion? → Honey-colored crusted lesions and bullae from exfoliative toxins
12. Dupilumab (Dupixent) works by blocking the receptor for which cytokines in atopic dermatitis? → IL-4 and IL-13
13. Parakeratosis is defined as which histological finding? → Retention of nuclei within the stratum corneum
14. What is the primary mechanism by which benzoyl peroxide treats acne? → Releases free oxygen radicals that are bactericidal against Cutibacterium acnes
15. The 'ABCDE' criteria for melanoma evaluation stands for asymmetry, border, color, diameter, and what fifth feature added later? → Evolving
16. Solar elastosis is characterized by which histological finding in the dermis? → Basophilic degeneration and clumping of elastic fibers
17. Which anatomic structure marks the junction between the epidermis and dermis and plays a key role in anchoring the two layers? → Basement membrane zone
18. Tinea versicolor is caused by which organism? → Malassezia furfur
19. Which dermatological condition famously affected the 16th-century monarch King Henry VIII later in life, contributing to his characteristic appearance? → Syphilitic gummas and leg ulcers
20. What is the primary cell type responsible for the inflammatory response in contact dermatitis? → CD4+ T lymphocytes (Th1/Th2 cells)
21. The Koebner phenomenon refers to the appearance of skin lesions at sites of: → Trauma or injury
22. A 'Grenz zone' on dermatopathology refers to which histological finding? → A band of spared papillary dermis between the epidermis and a dermal infiltrate
23. Which of the following conditions also goes by the name "ringworm"? → tinea corporis
24. Which autoimmune blistering disease is characterized by IgG antibodies against desmoglein 1 and 3, affecting the epidermis? → Pemphigus vulgaris
25. What is the pathognomonic skin finding of Kawasaki disease in children? → Polymorphous exanthem with desquamation of fingertips in the recovery phase
26. What is the recommended surgical margin for a primary melanoma with Breslow thickness between 1.01–2.0 mm? → 1–2 cm wide local excision
27. Which dermatophyte species is the most common cause of tinea capitis in the United States? → Trichophyton tonsurans
28. Which type of skin cancer has the highest rate of metastasis? → Merkel cell carcinoma
29. What skin findings are associated with celiac disease beyond dermatitis herpetiformis? → Aphthous ulcers, angular cheilitis, and alopecia
30. Which topical medication is first-line for treating cradle cap (infantile seborrheic dermatitis) on the scalp? → Gentle emollient oils and mild antifungal shampoos