Intro to Eczematous Eruptions Flashcards
What is the allergic triad?
- asthma
- hay fever
- atopic dermatitis
Who gets atopic dermatitis?
- children under 5 y/o
Describe clinical symptoms of acute atopic dermatitis.
- intensely pruritic lesions
- erythematous papules with excoriation
- vesiculations with serous exudate
Describe clinical symptoms of subacute atopic dermatitis
- erythematous, excoriated scaling papules
- irritated, longer effect
Describe clinical symptoms of chronic atopic dermatitis.
- thickened skin with lichenification
- fibrotic papules
- hyper/hypopigmentation s/p; opposite of patients normal
Where do atopic dermatitis symptoms present on infants and why?
- extensor surfaces: friction
- face/scalp
- spares diaper area
Where do atopic dermatitis symptoms present on children and adults?
- flexural folds
What is an itch that rashes?
- atopic dermatitis
What are the most common food allergens in children?
- egg
- soy
- milk
- wheat
- fish
- shellfish
- peanut
In what order are substances used? (best to worst)
- ointments > creams > lotions > solutions
What is a risk of using over using corticosteroids?
- skin atrophy
Describe the clinical findings of seborrheic dermatitis
- greasy scales that look like psoriasis overlying erythematous patches or plaques
Where does seborrheic dermatitis affect?
- scalp (dandruff)
- flexeral areas
What is cradle cap/crap?
- seborrheic dermatitis in the first few weeks of life
- resolves by 6 mo but returns in puberty/adulthood
What is the treatment for seborrheic dermatitis?
- low potency topical glucocorticoids (steroids) with topical antifungal
- antidandruff shampoos to be left in place 3-5mins
- high potency topical glucocorticoid solution only for severe scalp involvement
Describe the clinical findings of lichen simplex chronicus
- end stage of many pruritic and eczematous disorders
- circumscribed plaques of lichenified skin
What causes the patches associated with lichen simplex chronicus?
- chronic scratching or rubbing
What are the common areas to find lichen simplex chronicus?
- posterior nucal region
- dorsum of feet
- ankles
What is the treatment for lichen simplex chronicus?
- high potency topical glucocorticoid cream
- cessation of itching and scratching
- oral antihistamine with tricyclic antidepressants
Describe the clinical presentation of irritant contact dermatitis
- well demarcated
- localized to thin skin (hands)
What is the most common irritant contact dermatitis?
- chronic low-grade
Describe an allergic contact dermatitis reaction
- erythemetous
- vessiculation
- severe pruritis
What is the most common cause of allergic contact dermatitis?
- plant exposure (i.e. poison ivy)
Describe the visible appearance of an allergic contact dermatitis reaction
- linear or angular eruption
What is the leading causes of allergic contact dermatitis in the world?
- nickel
What is the classic sign of neomycin induced allergic contact dermatitis?
- otits externa with red ears
What causes diaper rash?
- wetness
- friction
- microorganisms
intertrigo
- wet skin at a crease
- chafing and maceration
seborrheic diaper dermatitis
- involves the creases
atopic diaper eczema
- spares the creases
What induces candidia?
- antibioitcs
What is the treatment for diaper rash?
- airing the diaper area
- frequent diaper changes
- barrier ointments
- low potentcy steroid ointment
What treats candida?
- antifungals i.e. diflucan
