Dermatology Flashcards
1
Q
- Abrupt eruption of itchy/burning small erythematous halos that arise in the hair follicle
- Hallmark is hair emanating from the hair follicle
A
Folliculitis
2
Q
- Bullous- inner tube shaped rim with a central thin, flat, honey colored crust that is common on the face
- Non-Bullous - tinea like scaling border with a honey-yellow to white-brown crust with a red, moist base
A
Impetigo
3
Q
- Edematous, expanding, erythematous, warm plaque with or without vesicles or bullae
- Lower leg is frequently involved
- Pain, chills, and fever are commonly present
- Occur when there is a break in the skin and bacteria enters the tissue/barrier
A
Cellulitis
4
Q
•Most frequently occurs in the extremities and may mimic DVT
•Initially there is pain, erythema, edema, celluliti, and high fever
•Unrelenting pain out of proportion to the physical findings even if there is only mild or no fever or erythema, often intense pain with palpation
**MEDEVAC**
A
Necrotizing Fasciitis
5
Q
A walled off, deep and painful, firm or fluctuant mass enclosing a collection of pus; often evolves from a superficial folliculitis
A
Furuncle
6
Q
An extremely painful, deep, interconnected aggregate of infected, abscessed follicles (several are involved) that are prevalent on the back of the neck, upper back, and lateral thighs
A
Carbuncle
7
Q
- Sudden onset of mild to severe pain in the intergluteal region while sitting or performing activities that stretch the skin overlying the natal cleft
- May have intermittent swelling as well as mucoid, purulent, and/or bloody drainage in the area
- May have associated fever and malaise
A
Pilonidal Cyst
8
Q
- Firm dermal papule or nodule that may become red and drain, mimicking an abscess (expressible cheesy material may be present)
- The firm, dome shaped, pale-yellowish intradermal or subcutaneous cystic nodules range from 0.5-5.0cm in size
- Cysts are somewhat mobile but are tethered to the overlying skin through a small punctum that often appears as a comedome
A
Epidermal Cyst
9
Q
- Primary lesion is a pustule, whose contents dissect horizontally under the stratum corneum and then peel it away
- Results in a red, denuded glistening surface with a long cigarette paper-like, scaling and advancing border
- Infancy, pregnancy, oral contraceptive use, systemic antibiotic therapy, diabetes, skin maceration, topical and systemic corticoid therapy and decreased cell mediated immunity are predisposing factors to infection
A
Candidiasis
10
Q
- May have pruritis and tenderness
- Seborrheic Dermatitis type - diffuse or patchy, fine white, adherent scale on the scalp
- Inflammatory Tinea Capitis(Kerion) - one or more inflamed, boggy tender areas of alopecia with pustules
A
Tinea Capitis
11
Q
- Ring shaped lesions with an advancing scaly border and central clearing or scaly patches with a distinct border
- Often occur on exposed areas of the body such as the face and arms
- Wrestlers or recruits are most often affected
- Round Annular Lesions - begin as flat, scaly papules which slowly develop a raised border that extends at variable rate in all directions
A
Tinea Corporis (Ringworm)
12
Q
- Velvety tan, pink, or white macules that do not tan
- Fine scales that are not visible but are seen by scraping the lesion
- Central upper trunk is the most frequent site
- Excess heat and humidity predispose patients to infection
- Numerous small, circular, white, velvety macules on the upper trunk is the most common presentation
A
Tinea Versicolor
13
Q
- Dermatophyte infection of the crural fold (groin and gluteal cleft)
- Peripherally spreading, sharply demarcated, centrally clearing erythematous lesions
- Occurs almost exclusively in post pubertal males
- May have associated tinea infection of feet or toenails
- Lesions are often bilateral and begin in the crural fold
- Marked itching in intertriginous areas
- Predisposing factor is the presence of a warm, moist environment
A
Tinea Cruris (Jock Itch)
14
Q
- Itching, burning, and stinging of the interdigital web and soles; vesicles on soles in inflammatory cases
- Most often present with asymptomatic scaling
- Toenail or fingernail fungal infection may accompany
A
Tinea Pedis
15
Q
- Often occurs on the face or upper trunk
- Papular or pustular eruptions consisting of open and closed comedones that are smaller than 5mm in diameter
- Pustules have a visible central core of purulent material
A
Acne
16
Q
- Condition caused by ingrowing hairs, most common severely affected area is the neck but can occur in the scalp, posterior neck, groin, or legs
- Scarring and hyperpigmentation may result
- Red papules or pustules appear in the affected skin and can be painful and pruritic
A
Psuedofolliculitis Barbae
17
Q
- Often caused by repeated exposure to mild irritants; water, soaps, heat and friction. Strong irritants; acids, alkalis, wet cement
- Erythema, dryness, painful cracking or fissuring and scaling. Tenderness and burning are common and predominate the itching.
A
Irritant Contact Dermatitis
18
Q
- Delayed-type hypersensitivity caused by contact with an allergen; poison ivy, oak, sumac, metals and rubber additives
- Vesicles, edema, redness and extreme pruritis. Strong allergens may produce bullae
A
Allergic Contact Dermatitis
19
Q
- Eczematous eruption that is distressingly pruritic, recurrent, and occurs bilaterally in flexural areas
- Major criteria (four required for dx); pruritis, young age at onset, typical morphology and distribution, dlexural lichenification and linearity in adults, chronic and relapsing course, personal or family history of asthma, allergic rhinitis, or atopic dermatitis
- Red pruritic papules or patches of erythema and scaling
A
Atopic Dermatitis
