3: Rashes Flashcards
What are treatment options for contact dermatitis (5)?
- Remove cause.
- Compresses
- Topical steroid
- PO steroid (for allergic and irritant, PO are permissible)
- Patch testing for chronic allergic contact derma
Direct toxic reaction to rubbing, friction, or maceration, or by exposure to chemical or thermal agents.
Irritant Contact Dermatitis
Psoriasis with severe skin redness over a large part of the body. Skin shedding that occurs in large sheets rather than smaller flakes or scales. Pustules or blisters. Burnt-looking skin.
Erythrodermic Psoriasis
Infx of the dermis and subcutaneous tissues that can lead to fever, erythema, edema, and pain.
Cellulitis
Presents with flares of widespread sterile pustules on a background of red and tender skin.
General Pustular Psoriasis
Joint problems associated with a red patches of skin topped with silvery scales.
Psoriatic Arthritis
Dermatitis with an appearance that is erythematous, scaly, and eczematous.
Irritant Contact Dermatitis
What type of allergic reaction is allergic contact dermatitis?
Type IV
Causes of cellulitis (4).
- Break in skin (surgical)
- Wound
- Ulcer
- Superinfx
Caused by dermatophytes that infect the stratum corneum.
Tinea
Dermatitis that is antigen and antibody mediated.
Allergic Contact Dermatitis
With dyshidrotic eczema, you need to r/o _____.
Infx caused by bacteria or fungus.
Candidiasis is often found in immune-compromised and _____ adults.
Diabetic
If a patient with a cellulitis rash appears ill, what labs do you get?
CBC or sed rate (or wound culture)
What is the assessment and management for stasis dermatitis (4)?
- Vascular assessment
- Doppler
- Review clotting factors
- Treat with support, emollients, corticosteroids, compression hose
How is candidiasis diagnosed?
KOH wet mount (though diagnosis is typically clinical)
Eczematous dermatitis of the leg that is associated with chronic edema, varicose veins, hyperpigmentation, and vascular surgery.
Stasis Dermatitis
Chronic psoriatic pustular condition affecting palms and soles.
Palmoplantar Pustulosis
Which tinea has often been incorrectly treated with steroids?
Tinea incognito. It may be masked by that, but it still needs proper treatment.
Cellulitis is most common in which 4 populations?
- Renal dz
- Liver dz
- Diabetes
- Alcohol/drug users
T/F With seborrhea, you should r/o fungus with a scraping and culture, even though it is associated with fungus.
True
T/F Dyshidrotic eczema is one of the few rashes that peels on the hands.
True. Diagnosis is based on atopic hx.
Affects skin, nails, joints. Can cause arthritis.
Psoriasis
Dermatitis with an appearance that is pruritic, linear, streaks, blisters.
Allergic Contact Dermatitis
Other than clinical, how is tinea diagnosed?
Scrape and use KOH
Small, dewdrop-shaped papules that appear after an infx.
Guttate Psoriasis
Rash that can be red, swollen, clear edges, vesicles, bullae, necrosis, streaking.
Cellulitis
Treatment options for seborrhea (4).
- Zinc
- Selenium
- Antifungals
- Steroids
What is the best way to determine is a patient has irritant contact dermatitis?
Patient hx
Before treating candidiasis, you should r/o _____ or _____.
Staph infx or atopic dermatitis
Sharp, silvery plaques.
Plaque Psoriasis
Severity of contact dermatitis is determined by what 3 things?
- Amount of exposure
- Sensitivity
- Duration
What are common causes of allergic contact dermatitis (6)?
- Nickel
- Gold
- Neomycin
- Formaldehyde
- Thimerosol
- Bacitracin
Lesions that are greasy, yellow, layered, plaque, crust associated with Malassezia furfur.
Seborrhea
Eczema of the hand that is weeping, peeling, and itchy.
Dyshidrotic Eczema
With psoriasis labs, what are you looking for?
Strep infx or fungus
If no wound culture is performed, what organisms do you treat for with cellulitis?
Staph or strep
Eczema that is a dry, fissured area, erythematous, brown discoloration, erosion, ulceration.
Stasis Dermatitis
Smooth, red, sharply defined plaques, macerated, can have odor.
Inverse Psoriasis
Thick fingernails with pitting, ridges in the nails, nail lifting away from the nail bed, and irregular contour of the nail.
Nail Psoriasis
What 3 dermatophytes cause tinea?
- Microsporum
- Trichophyton
- Epidermophyton
What is the concern with stasis dermatitis?
Susceptible to secondary infx with staph.
Pruritus of unknown origin is usually chronic itching lasting longer than 2 weeks. What should you consider in these cases (5)?
- Liver dz
- Renal dz
- Carcinoid syndrome
- Allergies
- Underlying malignancy
What are treatment options for psoriasis (3)?
- Phototherapy
- Steroids
- Systemic therapy
Where is seborrhea found in adults (6)?
- Eyebrows
- Eyelashes
- Eyes
- Nose
- Ears
- Scalp