Other Eczematous Disease Flashcards
What two age groups are most commonly affected by seborrheic dermatitis?
Infants and adults, rarely kids
Pathogenesis of seborrheic dermatitis
Altered sebum and Malassezia spp
Most common areas affected by seborrheic dermatitis?
Scalp, ears (external canal retroauricular fold), medial eyebrows, upper eyelids, nasolabial folds, central chest and major body folds
First-line agents of seborrheic dermaittis?
Topical antifungal creams and shampoos, selenium sulfide or zinc shampoo’s, mild topical CS for face and body folds, moderate strength topical CS for scalp and ears (fluocinonide)
-2nd line: topical tacrolimus ointment (stings)
Diseases associated with severe seborrheic dermatitis?
HIV infection and neurological disease
Risk factors for asteatotic eczema?
Winter weather, dry weather, and increased age
Posterior axillary line involvement can be seen in what eczematous diseases?
Can be seen in chronic GVHD or asteatotic eczema
What is an Id reaction?
Systemic eczematous reaction to a previously localized dermatitis. Can also be a rebound phenomenon from a rapid CS taper.
Areas favored by Id reaction?
Symmetric extensor surfaces of extremities, palms and soles
What are the two entities which most often trigger id reaction?
Allergic contact dermatitis and stasis dermatitis
Clinical of nummular dermatitis
- Doesn’t need the atopic march, coin-shaped lesions 2-3 cm in diameter commonly on the arms in women, but all extremities can be involved.
- Has erythematous border
- Chronic relapsing course
What must be seen for the dx of HTLV-associated infective dermatitis?
+ HTLV-1 serology
What age group most affected by HTLV-associated infective dermatitis?
Neonates, infants, rare in adults
Clinical of dyshydrotic eczema?
Firm extremely pruritic vesicles of palms>soles and on lateral and medial aspects of the digits
What medication can trigger dyshidrotic eczema?
IVIG
Triggers for dyshydrotic eczema?
Stress, allergic or irritant contact derm, IVig
Tx of dyshydrotic eczema?
Potent topical CS, topical tacrolimus (first line), PUVA, and systemic CS
Clinical of juvenile plantar dermatosis?
Dry and scaly skin w/ mild inflammation and “glazed” appearance on bottom of feet. +/- painful fissures on feet.
What is juvenile plantar dermatosis caused by?
Hydration of the corneal layer 2/2 wearing impermeable shoe materials –> shearing from the friction of softened corneum–> usually only seen in children w/ atopic diathesis.
Treatments for juvenile plantar dermatosis
Synthetic socks, keeping feet dry
Most common cause of diaper dermatitis ?
Irritant contact (urine, stool, etc)
What type of milk is a/w less candida diaper dermatitis?
Breast fed –> cow’s mild fed kids have more urease producing bacteria –> more basic and then you get more candidiasis
3 most common causes of diaper dermatitis?
Irritant contact dermatitis, candidiasis, seborrheic dermatitis
Less common causes of diaper dermatitis?
Bacterial infections (bullous impetigo, streptococcal perianal dermatitis and intertrigo), psoriasis, allergic contact dermatitis, atopic dermatitis