Atopic Dermatitis vs Seborrheic Dermatitis
Atopic Dermatitis and Seborrheic Dermatitis are easy to mix up on the boards. Here's a side-by-side comparison — presentation, workup, imaging, and first-line treatment — drawn from our full outlines.
Atopic Dermatitis vs Seborrheic Dermatitis at a glance
- Atopic Dermatitis: Chronic relapsing pruritic inflammatory dermatosis driven by skin barrier dysfunction and Th2 immune skewing; part of the atopic march.
- Seborrheic Dermatitis: Chronic relapsing dermatitis of sebum-rich areas associated with Malassezia overgrowth; manifests as cradle cap (infants) and dandruff (adults).
Keep comparing — start your free trial
You've used your 2 free previews. Create your free account to see the full Atopic Dermatitis vs Seborrheic Dermatitis comparison — plus all 514 diagnosis outlines, 6,400+ board-style questions, and an AI tutor. Your 7-day free trial includes everything, no credit card required.
Side-by-side comparison
| Feature | Atopic Dermatitis | Seborrheic Dermatitis |
|---|---|---|
| At a glance | Chronic relapsing pruritic inflammatory dermatosis driven by skin barrier dysfunction and Th2 immune skewing; part of the atopic march. | Chronic relapsing dermatitis of sebum-rich areas associated with Malassezia overgrowth; manifests as cradle cap (infants) and dandruff (adults). |
| Classic presentation | Flexural eczematous patches with lichenification in a child or adolescent with personal/family atopy.; Intense pruritus — required feature; often worse at night, disrupts sleep; Chronic relapsing course with flares and remissions; Dry skin (xerosis) between flares; Infants (0-2 yrs): erythematous, weeping, crusted patches on cheeks,… | Greasy yellow scale on erythematous base in sebaceous distribution; nasolabial fold involvement; postauricular fissures.; Mild pruritus or burning, especially scalp; Visible scaling and erythema, often worse in winter; Cosmetic concern, embarrassment; Scalp: fine flaky to thick greasy yellow scale; diffuse or patchy; erythema; Face:… |
| Workup / key labs | Hanifin and Rajka criteria (3 major + 3 minor) or AAD simplified criteria. Essential features: pruritus + eczematous dermatitis in age-typical distribution + chronic/relapsing course.; Clinical diagnosis — no required labs; Serum total IgE often elevated; allergen-specific IgE or skin-prick testing only if clear allergic trigger… | Clinical: scaling and erythema in characteristic sebaceous distribution with chronic relapsing course.; Clinical diagnosis; Consider HIV testing if sudden, severe, or refractory disease, especially in young adults; KOH preparation if tinea or pityriasis versicolor cannot be excluded; Skin biopsy rarely needed; shows spongiosis with… |
| Imaging | Not indicated | Not indicated |
| First-line treatment | Skin barrier repair: emollient/moisturizer (ceramide-containing, petrolatum-based) applied liberally ≥2x/day and immediately after bathing ('soak and seal'); Lukewarm short baths/showers with non-soap cleanser (e.g., syndet); pat dry; Topical corticosteroid potency tailored to severity and site — hydrocortisone 1-2.5% (low; face, folds,… | Adult scalp (dandruff/mild-moderate): ketoconazole 2% shampoo, selenium sulfide 2.5% shampoo, zinc pyrithione 1-2% shampoo, ciclopirox 1% shampoo, or coal tar shampoo — 2-3x/week, lather and leave on 5 min before rinsing; Adult scalp (severe/plaque): high-potency topical corticosteroid solution/foam — clobetasol 0.05%, fluocinonide —… |
Drill Atopic Dermatitis vs Seborrheic Dermatitis questions on FirstPassPA
Turn this comparison into retention. 6,400+ board-style questions with an AI tutor that explains every answer — free to start, no card required.
Start studying free → Try today's free questionEducational use only. This outline is a study aid for PA students and is not medical advice or a substitute for clinical judgment. FirstPassPA is an independent study tool and is not affiliated with, endorsed by, or sponsored by NCCPA or PAEA. PANCE® and PANRE® are registered trademarks of the National Commission on Certification of Physician Assistants; End of Rotation™ is a program of the Physician Assistant Education Association.